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ifconfig(1M)		System Administration Commands		  ifconfig(1M)

NAME
       ifconfig - configure network interface parameters

SYNOPSIS
       ifconfig interface [address_family] [address  [/prefix_length]
	[dest_address]] [addif	address	 [/prefix_length]]
	[removeif  address  [/prefix_length]] [arp |  -arp]
	[auth_algs authentication algorithm] [encr_algs encryption algorithm]
	[encr_auth_algs authentication algorithm] [auto-revarp]
	[broadcast  address] [deprecated |  -deprecated]
	[preferred |  -preferred] [destination	dest_address]
	[ether	[address]] [failover |	-failover] [group
	[name |	 ""]] [index   if_index] [metric  n] [modlist]
	[modinsert mod_name@pos] [modremove mod_name@pos]
	[mtu  n] [netmask  mask] [plumb] [unplumb] [private
	|  -private] [nud |  -nud] [set	 [address]  [/netmask]]
	[standby |  -standby] [subnet  subnet_address] [tdst
	tunnel_dest_address] [token   address/prefix_length]
	[tsrc  tunnel_src_address] [trailers |	-trailers]
	[up] [down] [usesrc [name |  none]] [xmit |  -xmit]
	[encaplimit n |	 -encaplimit] [thoplimit n] [router
	|  -router] [zone zonename |  -zone |  -all-zones]

       ifconfig [address_family] interface {auto-dhcp |	 dhcp} [primary]
	[wait  seconds]	 drop |	 extend |  inform |  ping
	|  release |  start |  status

DESCRIPTION
       The  command  ifconfig is used to assign an address to a network inter‐
       face and to configure network interface parameters. The	ifconfig  com‐
       mand  must  be  used at boot time to define the network address of each
       interface present on a machine; it may also be used at a later time  to
       redefine	 an  interface's  address or other operating parameters. If no
       option is specified, ifconfig displays the current configuration for  a
       network	interface. If an address family is specified, ifconfig reports
       only the details specific to that address family. Only privileged users
       may  modify the configuration of a network interface. Options appearing
       within braces ({}) indicate that one of the options must be specified.

   DHCP Configuration
       The forms of ifconfig that use the auto-dhcp or dhcp arguments are used
       to  control the Dynamic Host Configuration Protocol ("DHCP") configura‐
       tion of the interface. In this mode, ifconfig is used to control opera‐
       tion  of	 dhcpagent(1M),	 the  DHCP client daemon. Once an interface is
       placed under DHCP control by using the start operand,  ifconfig	should
       not, in normal operation, be used to modify the address or characteris‐
       tics of the interface. If the address of an  interface  under  DHCP  is
       changed, dhcpagent will remove the interface from its control.

OPTIONS
       The following options are supported:

       addif address

	   Create  the next unused logical interface on the specified physical
	   interface. If the physical interface	 is  part  of  a  multipathing
	   group,  the	logical interface can be added to a different physical
	   interface in the same group.

       all-zones

	   Make the interface available to every shared-IP zone on the system.
	   The	appropriate  zone to which to deliver data is determined using
	   the tnzonecfg database. This option is available only if the system
	   is configured with the Solaris Trusted Extensions feature.

	   The	tnzonecfg  database is described in the tnzonecfg(4) man page,
	   which is part of the Solaris Trusted Extensions Reference Manual.

       anycast

	   Marks the logical interface as an anycast address  by  setting  the
	   ANYCAST flag. See "INTERFACE FLAGS," below, for more information on
	   anycast.

       -anycast

	   Marks the logical interface as not an anycast address  by  clearing
	   the ANYCAST flag.

       arp

	   Enable  the	use of the Address Resolution Protocol ("ARP") in map‐
	   ping between network	 level	addresses  and	link  level  addresses
	   (default).  This  is currently implemented for mapping between IPv4
	   addresses and MAC addresses.

       -arp

	   Disable the use of the ARP on a physical interface.

       auth_algs authentication algorithm

	   For a tunnel, enable IPsec AH  with	the  authentication  algorithm
	   specified.  The  algorithm  can  be either a number or an algorithm
	   name, including any to express  no  preference  in  algorithm.  All
	   IPsec tunnel properties must be specified on the same command line.
	   To disable tunnel security, specify an auth_alg of none.

	   It is now preferable to use the ipsecconf(1M) command when  config‐
	   uring  a tunnel's security properties. If ipsecconf was used to set
	   a tunnel's security properties, this keyword will  not  affect  the
	   tunnel.

       auto-dhcp

	   Use	DHCP  to  automatically acquire an address for this interface.
	   This option has a completely equivalent alias called dhcp.

	   For IPv6, the interface specified must be the zeroth logical inter‐
	   face	 (the  physical	 interface  name),  which  has	the link-local
	   address.

	   primary

	       Defines the interface as the primary. The interface is  defined
	       as the preferred one for the delivery of client-wide configura‐
	       tion data. Only one interface can be the primary at  any	 given
	       time. If another interface is subsequently selected as the pri‐
	       mary, it replaces the previous one. Nominating an interface  as
	       the primary one will not have much significance once the client
	       work station has booted, as many applications will already have
	       started	and  been  configured with data read from the previous
	       primary interface.

	   wait seconds

	       The ifconfig command will wait until the operation either  com‐
	       pletes  or for the interval specified, whichever is the sooner.
	       If no wait interval is given, and the  operation	 is  one  that
	       cannot  complete immediately, ifconfig will wait 30 seconds for
	       the requested operation to complete. The symbolic value forever
	       may be used as well, with obvious meaning.

	   drop

	       Remove  the specified interface from DHCP control without noti‐
	       fying the DHCP server, and record the current lease  for	 later
	       use.  Additionally,  for	 IPv4,	set the IP address to zero and
	       mark the interface as "down." For  IPv6,	 unplumb  all  logical
	       interfaces plumbed by dhcpagent.

	   extend

	       Attempt to extend the lease on the interface's IP address. This
	       is not required, as the agent  will  automatically  extend  the
	       lease well before it expires.

	   inform

	       Obtain  network	configuration  parameters  from	 DHCP  without
	       obtaining a lease on IP addresses. This is useful in situations
	       where  an  IP address is obtained through mechanisms other than
	       DHCP.

	   ping

	       Check whether the interface given is under DHCP control,	 which
	       means  that  the	 interface is managed by the DHCP agent and is
	       working properly. An exit status of 0 means success.

	   release

	       Relinquish the IP addresses on the interface by	notifying  the
	       server and discard the current lease. For IPv4, mark the inter‐
	       face as "down." For IPv6, all  logical  interfaces  plumbed  by
	       dhcpagent are unplumbed.

	   start

	       Start DHCP on the interface.

	   status

	       Display the DHCP configuration status of the interface.

       auto-revarp

	   Use the Reverse Address Resolution Protocol (RARP) to automatically
	   acquire an address for this interface. This will fail if the inter‐
	   face	 does  not  support  RARP; for example, IPoIB (IP over Infini‐
	   Band), and on IPv6 interfaces.

       broadcast address

	   For IPv4 only. Specify the address to use to	 represent  broadcasts
	   to the network. The default broadcast address is the address with a
	   host part of all 1's. A "+" (plus sign)  given  for	the  broadcast
	   value  causes the broadcast address to be reset to a default appro‐
	   priate for the (possibly new) address and netmask. The arguments of
	   ifconfig are interpreted left to right. Therefore

	     example% ifconfig -a netmask + broadcast +

	   and

	     example% ifconfig -a broadcast + netmask +

	   may	result	in  different  values being assigned for the broadcast
	   addresses of the interfaces.

       deprecated

	   Marks the logical interface as deprecated.  An  address  associated
	   with	 a deprecated interface will not be used as source address for
	   outbound packets unless either there are no other addresses	avail‐
	   able	 on the interface or the application has bound to this address
	   explicitly. The status display shows DEPRECATED as part  of	flags.
	   See	for information on the flags supported by ifconfig.

       -deprecated

	   Marks  a logical interface as not deprecated. An address associated
	   with such an interface could be used as a source address  for  out‐
	   bound packets.

       preferred

	   Marks the logical interface as preferred. This option is only valid
	   for IPv6 addresses. Addresses assigned to preferred logical	inter‐
	   faces  are  preferred  as source addresses over all other addresses
	   configured on the system, unless the address is of an inappropriate
	   scope  relative to the destination address. Preferred addresses are
	   used as source addresses regardless	of  which  physical  interface
	   they	 are  assigned	to. For example, you can configure a preferred
	   source address on the loopback interface and advertise reachability
	   of this address by using a routing protocol.

       -preferred

	   Marks the logical interface as not preferred.

       destination dest_address

	   Set the destination address for a point-to point interface.

       dhcp

	   This option is an alias for option auto-dhcp

       down

	   Mark	 a  logical interface as "down". (That is, turn off the IFF_UP
	   bit.) When a logical interface is marked "down,"  the  system  does
	   not	attempt	 to  use  the  address assigned to that interface as a
	   source address for outbound packets and will not recognize  inbound
	   packets  destined  to that address as being addressed to this host.
	   Additionally, when all  logical  interfaces	on  a  given  physical
	   interface are "down," the physical interface itself is disabled.

	   When	 a  logical  interface	is  down, all routes that specify that
	   interface as the output (using the -ifp  option  in	the  route(1M)
	   command or RTA_IFP in a route(7P) socket) are removed from the for‐
	   warding table. Routes marked with RTF_STATIC are  returned  to  the
	   table  if the interface is brought back up, while routes not marked
	   with RTF_STATIC are simply deleted.

	   When all logical interfaces that could possibly be used to reach  a
	   particular  gateway address are brought down (specified without the
	   interface option as in the previous paragraph), the affected	 gate‐
	   way	routes	are  treated as though they had the RTF_BLACKHOLE flag
	   set. All matching packets are  discarded  because  the  gateway  is
	   unreachable.

       encaplimit n

	   Set	the  tunnel  encapsulation  limit for the interface to n. This
	   option applies to IPv4-in-IPv6 and IPv6-in-IPv6 tunnels  only.  The
	   tunnel  encapsulation limit controls how many more tunnels a packet
	   may enter before it leaves any tunnels, that is, the tunnel nesting
	   level.

       -encaplimit

	   Disable  generation	of the tunnel encapsulation limit. This option
	   applies only to IPv4-in-IPv6 and IPv6-in-IPv6 tunnels.

       encr_auth_algs authentication algorithm

	   For a tunnel, enable IPsec ESP with	the  authentication  algorithm
	   specified.  It can be either a number or an algorithm name, includ‐
	   ing any or none, to indicate no algorithm  preference.  If  an  ESP
	   encryption  algorithm is specified but the authentication algorithm
	   is not, the default value for the ESP authentication algorithm will
	   be any.

	   It  is now preferable to use the ipsecconf(1M) command when config‐
	   uring a tunnel's security properties. If ipsecconf was used to  set
	   a  tunnel's	security  properties, this keyword will not affect the
	   tunnel.

       encr_algs encryption algorithm

	   For a tunnel, enable IPsec ESP with the encryption algorithm speci‐
	   fied. It can be either a number or an algorithm name. Note that all
	   IPsec tunnel properties must be specified on the same command line.
	   To  disable tunnel security, specify the value of encr_alg as none.
	   If an ESP authentication algorithm is specified, but the encryption
	   algorithm  is not, the default value for the ESP encryption will be
	   null.

	   It is now preferable to use the ipsecconf(1M) command when  config‐
	   uring  a tunnel's security properties. If ipsecconf was used to set
	   a tunnel's security properties, this keyword will  not  affect  the
	   tunnel.

       ether [ address ]

	   If no address is given and the user is root or has sufficient priv‐
	   ileges to open the underlying device, then display the current Eth‐
	   ernet address information.

	   Otherwise,  if  the	user is root or has sufficient privileges, set
	   the Ethernet address of the interfaces to address. The  address  is
	   an  Ethernet	 address represented as x:x:x:x:x:x where x is a hexa‐
	   decimal number between 0 and FF. Similarly, for the IPoIB (IP  over
	   InfiniBand) interfaces, the address will be 20 bytes of colon-sepa‐
	   rated hex numbers between 0 and FF.

	   Some, though not all,  Ethernet  interface  cards  have  their  own
	   addresses. To use cards that do not have their own addresses, refer
	   to section 3.2.3(4) of the IEEE 802.3 specification for  a  defini‐
	   tion	 of  the locally administered address space. The use of multi‐
	   pathing groups should be restricted to those cards with  their  own
	   addresses (see MULTIPATHING GROUPS).

       -failover

	   Mark	 the  logical interface as a non-failover interface. Addresses
	   assigned to non-failover logical interfaces will not failover  when
	   the	interface  fails.  Status  display shows NOFAILOVER as part of
	   flags.

       failover

	   Mark the logical interface as  a  failover  interface.  An  address
	   assigned  to	 such  an  interface  will failover when the interface
	   fails. Status display does not show NOFAILOVER as part of flags.

       group [ name |""]

	   Insert the logical interface in the multipathing group specified by
	   name.  To  delete  an interface from a group, use a null string "".
	   When invoked on the logical interface with id zero, the status dis‐
	   play shows the group name.

       index n

	   Change  the	interface index for the interface. The value of n must
	   be an interface index (if_index) that is not used on another inter‐
	   face.  if_index  will  be  a non-zero positive number that uniquely
	   identifies the network interface on the system.

       metric n

	   Set the routing metric of the interface to n; if no value is speci‐
	   fied,  the  default is 0. The routing metric is used by the routing
	   protocol. Higher metrics have the effect of	making	a  route  less
	   favorable.  Metrics are counted as addition hops to the destination
	   network or host.

       modinsert mod_name@pos

	   Insert a module with name mod_name to the stream of the  device  at
	   position pos. The position is relative to the stream head. Position
	   0 means directly under stream head.

	   Based upon the example in the modlist  option,  use	the  following
	   command  to insert a module with name ipqos under the ip module and
	   above the firewall module:

	     example% ifconfig eri0 modinsert ipqos@2

	   A subsequent listing of all the modules in the stream of the device
	   follows:

	     example% ifconfig eri0 modlist
	     0 arp
	     1 ip
	     2 ipqos
	     3 firewall
	     4 eri

       modlist

	   List all the modules in the stream of the device.

	   The	following  example  lists all the modules in the stream of the
	   device:

	     example% ifconfig eri0 modlist
	     0 arp
	     1 ip
	     2 firewall
	     4 eri

       modremove mod_name@pos

	   Remove a module with name mod_name from the stream of the device at
	   position pos. The position is relative to the stream head.

	   Based  upon	the example in the modinsert option, use the following
	   command to remove the firewall module from the stream after insert‐
	   ing the ipqos module:

	     example% ifconfig eri0 modremove firewall@3

	   A subsequent listing of all the modules in the stream of the device
	   follows:

	     example% ifconfig eri0 modlist
	     0 arp
	     1 ip
	     2 ipqos
	     3 eri

	   Note that the core IP stack modules, for example, ip and  tun  mod‐
	   ules, cannot be removed.

       mtu n

	   Set	the  maximum transmission unit of the interface to n. For many
	   types of networks, the mtu has an upper limit,  for	example,  1500
	   for	Ethernet.  This	 option sets the FIXEDMTU flag on the affected
	   interface.

       netmask mask

	   For IPv4 only. Specify how much of the address to reserve for  sub‐
	   dividing  networks  into subnetworks. The mask includes the network
	   part of the local address and the subnet part, which is taken  from
	   the	host  field  of the address. The mask contains 1's for the bit
	   positions in the 32-bit address which are to be used for  the  net‐
	   work	 and  subnet parts, and 0's for the host part. The mask should
	   contain at least the standard network portion, and the subnet field
	   should  be  contiguous  with	 the  network portion. The mask can be
	   specified in one of four ways:

	       1.     with a single hexadecimal number with a leading 0x,

	       2.     with a dot-notation address,

	       3.     with a "+" (plus sign) address, or

	       4.     with a pseudo host name/pseudo network name found in the
		      network database networks(4).
	   If  a  "+"  (plus sign) is given for the netmask value, the mask is
	   looked up in the netmasks(4) database. This lookup finds the	 long‐
	   est	matching  netmask  in the database by starting with the inter‐
	   face's IPv4 address as the key and iteratively masking off more and
	   more	 low  order bits of the address. This iterative lookup ensures
	   that the netmasks(4) database can be used to specify	 the  netmasks
	   when variable length subnetmasks are used within a network number.

	   If  a  pseudo host name/pseudo network name is supplied as the net‐
	   mask value, netmask data may be located in the  hosts  or  networks
	   database.  Names  are looked up by first using gethostbyname(3NSL).
	   If  not  found  there,  the	names  are  looked  up	in   getnetby‐
	   name(3SOCKET). These interfaces may in turn use nsswitch.conf(4) to
	   determine what data store(s) to use to fetch the actual value.

	   For both inet and inet6, the same information conveyed by mask  can
	   be specified as a prefix_length attached to the address parameter.

       nud

	   Enables the neighbor unreachability detection mechanism on a point-
	   to-point physical interface.

       -nud

	   Disables the	 neighbor  unreachability  detection  mechanism	 on  a
	   point-to-point physical interface.

       plumb

	   Open the device associated with the physical interface name and set
	   up the streams needed for IP to use the device. When	 used  with  a
	   logical  interface  name, this command is used to create a specific
	   named logical interface. An interface must  be  separately  plumbed
	   for	use  by	 IPv4  and IPv6. The address_family parameter controls
	   whether the ifconfig command applies to IPv4 or IPv6.

	   Before an interface has been plumbed, the interface will  not  show
	   up in the output of the ifconfig -a command.

       private

	   Tells  the in.routed routing daemon that a specified logical inter‐
	   face should not be advertised.

       -private

	   Specify unadvertised interfaces.

       removeif address

	   Remove the logical interface on the	physical  interface  specified
	   that matches the address specified. When the interface is part of a
	   multipathing group, the logical interface will be removed from  the
	   physical interface in the group that holds the address.

       router

	   Enable  IP forwarding on the interface. When enabled, the interface
	   is marked ROUTER, and IP packets can be forwarded to and  from  the
	   interface.

       -router

	   Disable  IP	forwarding  on	the interface. IP packets are not for‐
	   warded to and from the interface.

       set

	   Set the address, prefix_length or both, for a logical interface.

       standby

	   Marks the physical interface as a standby interface. If the	inter‐
	   face	 is  marked STANDBY and is part of the multipathing group, the
	   interface will not be selected to  send  out	 packets  unless  some
	   other  interface in the group has failed and the network access has
	   been failed over to this standby interface.

	   The status display shows "STANDBY, INACTIVE" indicating  that  that
	   the	interface is a standby and is also inactive. IFF_INACTIVE will
	   be cleared when some other interface belonging to the  same	multi‐
	   pathing  group  fails  over to this interface. Once a failback hap‐
	   pens, the status display will return to INACTIVE.

       -standby

	   Turns off standby on this interface.

       subnet

	   Set the subnet address for an interface.

       tdst tunnel_dest_address

	   Set the destination address of a tunnel. The address should not  be
	   the	same  as  the  dest_address  of the tunnel, because no packets
	   leave the system over such a tunnel.

       thoplimit n

	   Set the hop limit for a tunnel interface. The hop  limit  value  is
	   used	 as  the  TTL  in  the	IPv4  header  for the IPv6-in-IPv4 and
	   IPv4-in-IPv4 tunnels. For IPv6-in-IPv6  and	IPv4-in-IPv6  tunnels,
	   the hop limit value is used as the hop limit in the IPv6 header.

       token address/prefix_length

	   Set	the IPv6 token of an interface to be used for address autocon‐
	   figuration.

	     example% ifconfig eri0 inet6 token ::1/64

       trailers

	   This flag previously caused a  nonstandard  encapsulation  of  IPv4
	   packets  on certain link levels. Drivers supplied with this release
	   no longer use this flag. It is provided for compatibility,  but  is
	   ignored.

       -trailers

	   Disable the use of a "trailer" link level encapsulation.

       tsrc tunnel_src_address

	   Set	the  source address of a tunnel. This is the source address on
	   an outer encapsulating IP header. It must be an address of  another
	   interface already configured using ifconfig.

       unplumb

	   Close  the  device associated with this physical interface name and
	   any streams that ifconfig set up for IP to  use  the	 device.  When
	   used	 with  a  logical  interface  name,  the  logical interface is
	   removed from the system. After this command is executed, the device
	   name will no longer appear in the output of ifconfig -a.

       up

	   Mark	 a  logical  interface	"up".  This happens automatically when
	   assigning the first address to a logical interface. The  up	option
	   enables  an	interface  after an ifconfig down, which reinitializes
	   the hardware.

       usesrc [ name | none ]

	   Specify a physical interface to be used for source  address	selec‐
	   tion.  If  the keyword none is used, then any previous selection is
	   cleared.

	   When an application does not choose a non-zero source address using
	   bind(3SOCKET), the system will select an appropriate source address
	   based on the outbound interface and	the  address  selection	 rules
	   (see ipaddrsel(1M)).

	   When usesrc is specified and the specified interface is selected in
	   the forwarding table for output, the	 system	 looks	first  to  the
	   specified  physical interface and its associated logical interfaces
	   when selecting a source address. If no usable address is listed  in
	   the forwarding table, the ordinary selection rules apply. For exam‐
	   ple, if you enter:

	     # ifconfig eri0 usesrc vni0

	   ...and vni0 has address 10.0.0.1 assigned to it,  the  system  will
	   prefer 10.0.0.1 as the source address for any packets originated by
	   local connections that are sent through eri0. Further examples  are
	   provided in the EXAMPLES section.

	   While you can specify any physical interface (or even loopback), be
	   aware that you can also  specify  the  virtual  IP  interface  (see
	   vni(7D)). The virtual IP interface is not associated with any phys‐
	   ical hardware and is thus immune  to	 hardware  failures.  You  can
	   specify any number of physical interfaces to use the source address
	   hosted on a single virtual interface. This simplifies the  configu‐
	   ration of routing-based multipathing. If one of the physical inter‐
	   faces were to fail, communication would continue through one of the
	   remaining,  functioning  physical interfaces. This scenario assumes
	   that the reachability of the address hosted on the  virtual	inter‐
	   face	 is  advertised in some manner, for example, through a routing
	   protocol.

	   Because the ifconfig preferred option is applied to all interfaces,
	   it is coarser-grained than the usesrc option. It will be overridden
	   by usesrc and setsrc (route subcommand), in that order.

	   The use of the usesrc option is mutually exclusive of the IP multi‐
	   pathing  ifconfig options, group and standby. That is, if an inter‐
	   face is already part of a IP multipathing group or specified	 as  a
	   standby  interface,	then  it  cannot  be  specified	 with a usesrc
	   option, and vice-versa. For more details on	IP  multipathing,  see
	   in.mpathd(1M) and the .

       xmit

	   Enable a logical interface to transmit packets. This is the default
	   behavior when the logical interface is up.

       -xmit

	   Disable transmission of packets on an interface. The interface will
	   continue to receive packets.

       zone zonename

	   Place  the  logical interface in zone zonename. The named zone must
	   be active in the kernel in the ready or running state.  The	inter‐
	   face	 is  unplumbed	when  the zone is halted or rebooted. The zone
	   must be configure to be an shared-IP zone. zonecfg(1M) is  used  to
	   assign network interface names to exclusive-IP zones.

       -zone

	   Place IP interface in the global zone. This is the default.

OPERANDS
       The  interface  operand,	 as well as address parameters that affect it,
       are described below.

       interface

	   A string of one of the following forms:

	       o      name physical-unit, for example, eri0 or ce1

	       o      name physical-unit:logical-unit, for example, eri0:1

	       o      ip.tunN or ip6.tunN, for tunnels
	   If the interface name starts with a dash (-), it is interpreted  as
	   a set of options which specify a set of interfaces. In such a case,
	   -a must be part of the options and any of  the  additional  options
	   below can be added in any order. If one of these interface names is
	   given, the commands following it are applied to all of  the	inter‐
	   faces that match.

	   -a

	       Apply  the  command  to all interfaces of the specified address
	       family. If no address family is supplied, either on the command
	       line  or	 by  means of /etc/default/inet_type, then all address
	       families will be selected.

	   -d

	       Apply the commands to all "down" interfaces in the system.

	   -D

	       Apply the commands to all interfaces not	 under	DHCP  (Dynamic
	       Host Configuration Protocol) control.

	   -u

	       Apply the commands to all "up" interfaces in the system.

	   -Z

	       Apply the commands to all interfaces in the user's zone.

	   -4

	       Apply the commands to all IPv4 interfaces.

	   -6

	       Apply the commands to all IPv6 interfaces.

       address_family

	   The	address	 family	 is specified by the address_family parameter.
	   The ifconfig command currently  supports  the  following  families:
	   inet	 and  inet6. If no address family is specified, the default is
	   inet.

	   ifconfig    honors	 the	 DEFAULT_IP	setting	    in	   the
	   /etc/default/inet_type  file when it displays interface information
	   . If DEFAULT_IP is set to  IP_VERSION4,  then  ifconfig  will  omit
	   information	that  relates  to  IPv6	 interfaces. However, when you
	   explicitly specify an address family (inet or inet6) on the	ifcon‐
	   fig	command	 line,	the command line overrides the DEFAULT_IP set‐
	   tings.

       address

	   For the IPv4 family (inet), the  address  is	 either	 a  host  name
	   present in the host name data base (see hosts(4)) or in the Network
	   Information Service (NIS) map hosts, or an IPv4  address  expressed
	   in the Internet standard "dot notation".

	   For	the  IPv6  family  (inet6),  the address is either a host name
	   present in the host name data base (see hosts(4)) or in the Network
	   Information	Service (NIS) map ipnode, or an IPv6 address expressed
	   in the Internet standard colon-separated hexadecimal format	repre‐
	   sented as x:x:x:x:x:x:x:x where x is a hexadecimal number between 0
	   and FFFF.

       prefix_length

	   For the IPv4 and IPv6 families (inet and inet6), the	 prefix_length
	   is  a  number  between 0 and the number of bits in the address. For
	   inet, the number of bits in the address is 32; for inet6, the  num‐
	   ber	of  bits  in the address is 128. The prefix_length denotes the
	   number of leading set bits in the netmask.

       dest_address

	   If the dest_address	parameter  is  supplied	 in  addition  to  the
	   address parameter, it specifies the address of the correspondent on
	   the other end of a point-to-point link.

       tunnel_dest_address

	   An address that is or will be reachable through an interface	 other
	   than	 the  tunnel  being configured. This tells the tunnel where to
	   send the tunneled packets. This address must not be the same as the
	   interface destination address being configured.

       tunnel_src_address

	   An address that is attached to an already configured interface that
	   has been configured "up" with ifconfig.

INTERFACE FLAGS
       The ifconfig command supports the following interface flags.  The  term
       "address"  in  this context refers to a logical interface, for example,
       eri0:0, while "interface " refers to the physical interface, for	 exam‐
       ple, eri0.

       ADDRCONF

	   The	address	 is  from  stateless addrconf. The stateless mechanism
	   allows a host to generate its own address using  a  combination  of
	   information	advertised  by	routers and locally available informa‐
	   tion. Routers advertise prefixes that identify the  subnet  associ‐
	   ated	 with the link, while the host generates an "interface identi‐
	   fier" that uniquely identifies an interface in  a  subnet.  In  the
	   absence of information from routers, a host can generate link-local
	   addresses. This flag is specific to IPv6.

       ANYCAST

	   Indicates an anycast address. An  anycast  address  identifies  the
	   nearest  member  of	a  group of systems that provides a particular
	   type of service. An anycast address is assigned to a group of  sys‐
	   tems.  Packets are delivered to the nearest group member identified
	   by the anycast address instead of being delivered to all members of
	   the group.

       BROADCAST

	   This	 broadcast  address  is	 valid. This flag and POINTTOPOINT are
	   mutually exclusive

       CoS

	   This interface supports some form of Class of Service  (CoS)	 mark‐
	   ing.	 An  example  is the 802.1D user priority marking supported on
	   VLAN interfaces.

	   Note that this flag is only set on interfaces over VLAN  links  and
	   over Ethernet links that have their dladm(1M) tagmode link property
	   set to normal.

       DEPRECATED

	   This address is deprecated. This address will  not  be  used	 as  a
	   source  address  for	 outbound  packets  unless  there are no other
	   addresses on this interface or an application has explicitly	 bound
	   to  this  address.  An  IPv6	 deprecated address will eventually be
	   deleted when not used, whereas an IPv4 deprecated address is	 often
	   used	 with  IP  network multipathing IPv4 test addresses, which are
	   determined by the setting of the NOFAILOVER flag. Further, the DEP‐
	   RECATED  flag  is part of the standard mechanism for renumbering in
	   IPv6.

       DHCP

	   DHCP is used to manage this address.

       DUPLICATE

	   The logical interface has been disabled because the IP address con‐
	   figured  on	the  interface	is a duplicate. Some other node on the
	   network is using this address. If the  address  was	configured  by
	   DHCP or is temporary, the system will choose another automatically,
	   if possible. Otherwise, the system will  attempt  to	 recover  this
	   address  periodically  and the interface will recover when the con‐
	   flict has been removed from the network. Changing  the  address  or
	   netmask, or setting the logical interface to up will restart dupli‐
	   cate detection. Setting the interface to down  terminates  recovery
	   and removes the DUPLICATE flag.

       FAILED

	   The	interface  has failed. New addresses cannot be created on this
	   interface. If this interface is part of an IP network  multipathing
	   group,  a failover will occur to another interface in the group, if
	   possible

       FIXEDMTU

	   The MTU has been set using the -mtu option. This flag is read-only.
	   Interfaces  that  have this flag set have a fixed MTU value that is
	   unaffected by dynamic MTU  changes  that  can  occur	 when  drivers
	   notify IP of link MTU changes.

       INACTIVE

	   Indicates  that the interface is not currently being used for regu‐
	   lar traffic by the system. New addresses cannot be created on  this
	   interface.  The flag is set automatically on standby interfaces. It
	   can also be set when the system detects that a failed interface has
	   been repaired and FAILBACK=no is configured in /etc/default/mpathd.
	   The flag is cleared when the interface fails or when a failover  to
	   that interface occurs.

       LOOPBACK

	   Indicates that this is the loopback interface.

       MIP

	   Indicates that mobile IP controls this interface.

       MULTI_BCAST

	   Indicates  that the broadcast address is used for multicast on this
	   interface.

       MULTICAST

	   The interface supports multicast. IP	 assumes  that	any  interface
	   that supports hardware broadcast, or that is a point-to-point link,
	   will support multicast.

       NOARP

	   There is no address resolution protocol (ARP)  for  this  interface
	   that corresponds to all interfaces for a device without a broadcast
	   address. This flag is specific to IPv4.

       NOFAILOVER

	   This address will not failover if the interface fails.  IP  network
	       multipathing test addresses must be marked nofailover.

       NOLOCAL

	   The interface has no address , just an on-link subnet.

       NONUD

	   NUD	is  disabled  on  this interface. NUD (neighbor unreachability
	   detection) is used by a node to track the reachability state of its
	   neighbors, to which the node actively sends packets, and to perform
	   any recovery if a neighbor is detected to be unreachable. This flag
	   is specific to IPv6.

       NORTEXCH

	   The	interface  does	 not  exchange routing information. For RIP-2,
	   routing packets are not sent	 over  this  interface.	 Additionally,
	   messages  that  appear  to  come  over  this	 interface  receive no
	   response. The subnet or address of this interface is	 not  included
	   in advertisements over other interfaces to other routers.

       NOXMIT

	   Indicates  that  the	 address does not transmit packets. RIP-2 also
	   does not advertise this address.

       OFFLINE

	   Indicates that the interface has been offlined. New addresses  can‐
	   not	be created on this interface. Interfaces in an IP network mul‐
	   tipathing group are offlined prior to removal and replacement using
	   dynamic reconfiguration.

       POINTOPOINT

	   Indicates  that the address is a point-to-point link. This flag and
	   BROADCAST are mutually exclusive

       PREFERRED

	   This address is a preferred IPv6 source address. This address  will
	   be  used  as	 a source address for IPv6 communication with all IPv6
	   destinations, unless another address	 on  the  system  is  of  more
	   appropriate	scope.	The  DEPRECATED flag takes precedence over the
	   PREFERRED flag.

       PRIVATE

	   Indicates that this address is  not	advertised.  For  RIP-2,  this
	   interface is used to send advertisements. However, neither the sub‐
	   net nor this	 address  are  included	 in  advertisements  to	 other
	   routers.

       ROUTER

	   Indicates  that  IP packets can be forwarded to and from the inter‐
	   face.

       RUNNING

	   Indicates that the required resources for an	 interface  are	 allo‐
	   cated. For some interfaces this also indicates that the link is up.

       STANDBY

	   Indicates  that this is a standby interface to be used on failures.
	   Only interfaces in an IP network multipathing group should be  des‐
	   ignated  as	standby	 interfaces. If this interface is part of a IP
	   network multipathing group, the interface will not be  selected  to
	   send	 out  packets  unless  some other interface in the group fails
	   over to it.

       TEMPORARY

	   Indicates that this is a temporary IPv6 address as defined  in  RFC
	   3041.

       UNNUMBERED

	   This	 flag is set when the local IP address on the link matches the
	   local address of some other link in the system

       UP

	   Indicates that the interface	 is  up,  that	is,  all  the  routing
	   entries and the like for this interface have been set up.

       VIRTUAL

	   Indicates  that  the physical interface has no underlying hardware.
	   It is not possible to transmit or receive packets through a virtual
	   interface.  These  interfaces  are  useful  for  configuring	 local
	   addresses that can be used on multiple interfaces.  (See  also  the
	   -usesrc option.)

       XRESOLV

	   Indicates that the interface uses an IPv6 external resolver.

LOGICAL INTERFACES
       Solaris TCP/IP allows multiple logical interfaces to be associated with
       a physical network interface.  This  allows  a  single  machine	to  be
       assigned	 multiple  IP addresses, even though it may have only one net‐
       work interface. Physical network interfaces  have  names	 of  the  form
       driver-name  physical-unit-number,  while logical interfaces have names
       of the  form  driver-name  physical-unit-number:logical-unit-number.  A
       physical	 interface  is configured into the system using the plumb com‐
       mand. For example:

	 example% ifconfig eri0 plumb

       Once a physical interface has been "plumbed", logical interfaces	 asso‐
       ciated with the physical interface can be configured by separate -plumb
       or -addif options to the ifconfig command.

	 example% ifconfig eri0:1 plumb

       allocates a specific logical interface  associated  with	 the  physical
       interface eri0. The command

	 example% ifconfig eri0 addif 192.168.200.1/24 up

       allocates  the  next available logical unit number on the eri0 physical
       interface and assigns an address and prefix_length.

       A logical interface can be configured with  parameters  (  address,pre‐
       fix_length, and so on) different from the physical interface with which
       it is associated. Logical interfaces that are associated with the  same
       physical interface can be given different parameters as well. Each log‐
       ical interface must be associated with an existing  and	"up"  physical
       interface.  So,	for  example, the logical interface eri0:1 can only be
       configured after the physical interface eri0 has been plumbed.

       To delete a logical interface, use the -unplumb or  -removeif  options.
       For example,

	 example% ifconfig eri0:1 down unplumb

       will delete the logical interface eri0:1.

MULTIPATHING GROUPS
       Physical interfaces that share the same IP broadcast domain can be col‐
       lected into a multipathing group using the  group  keyword.  Interfaces
       assigned	 to  the same multipathing group are treated as equivalent and
       outgoing traffic is spread across the interfaces on  a  per-IP-destina‐
       tion  basis. In addition, individual interfaces in a multipathing group
       are monitored for failures; the addresses associated with failed inter‐
       faces  are  automatically  transferred  to other functioning interfaces
       within the group.

       For more details on IP multipathing, see in.mpathd(1M) and  the	.  See
       netstat(1M) for per-IP-destination information.

CONFIGURING IPV6 INTERFACES
       When  an	 IPv6  physical	 interface is plumbed and configured "up" with
       ifconfig, it is automatically assigned an IPv6 link-local  address  for
       which  the  last	 64  bits  are	calculated from the MAC address of the
       interface.

	 example% ifconfig eri0 inet6 plumb up

       The following example shows that the link-local address has a prefix of
       fe80::/10.

	 example% ifconfig eri0 inet6
	 ce0: flags=2000841<UP,RUNNING,MULTICAST,IPv6>
		    mtu 1500 index 2
		 inet6 fe80::a00:20ff:fe8e:f3ad/10

       Link-local  addresses are only used for communication on the local sub‐
       net and are not visible to other subnets.

       If an advertising IPv6 router exists on the link advertising  prefixes,
       then the newly plumbed IPv6 interface will autoconfigure logical inter‐
       face(s) depending on the prefix advertisements. For  example,  for  the
       prefix	advertisement	2001:0db8:3c4d:0:55::/64,  the	autoconfigured
       interface will look like:

	 eri0:2: flags=2080841<UP,RUNNING,MULTICAST,ADDRCONF,IPv6>
		   mtu 1500 index 2
		 inet6 2001:0db8:3c4d:55:a00:20ff:fe8e:f3ad/64

       Even if there are no prefix advertisements on the link, you  can	 still
       assign global addresses manually, for example:

	 example% ifconfig eri0 inet6 addif \
	 2001:0db8:3c4d:55:a00:20ff:fe8e:f3ad/64 up

       To  configure boot-time defaults for the interface eri0, place the fol‐
       lowing entry in the /etc/hostname6.eri0 file:

	 addif	2001:0db8:3c4d:55:a00:20ff:fe8e:f3ad/64 up

   Configuring IPv6/IPv4 tunnels
       An IPv6 over IPv4 tunnel interface can send and	receive	 IPv6  packets
       encapsulated in an IPv4 packet. Create tunnels at both ends pointing to
       each other. IPv6 over IPv4 tunnels require the tunnel source and tunnel
       destination  IPv4 and IPv6 addresses. Solaris 8 supports both automatic
       and configured tunnels. For automatic tunnels, an IPv4-compatible  IPv6
       address is used. The following demonstrates auto-tunnel configuration:

	 example% ifconfig ip.atun0 inet6 plumb
	 example% ifconfig ip.atun0 inet6 tsrc IPv4-address \
	    ::IPv4 address/96 up

       where  IPv4-address  is the IPv4 address of the interface through which
       the tunnel traffic will flow, and  IPv4-address,	 ::<IPv4-address>,  is
       the corresponding IPv4-compatible IPv6 address.

       The following is an example of a configured tunnel:

	 example% ifconfig ip.tun0 inet6 plumb tsrc my-ipv4-address \
	    tdst peer-ipv4-address up

       This  creates  a	 configured  tunnel  between my-ipv4-address and peer-
       ipv4-address with corresponding link-local addresses. For tunnels  with
       global  or  site-local addresses, the logical tunnel interfaces need to
       be configured in the following form:

	 example% ifconfig ip.tun0 inet6 addif my-v6-address peer-v6-address up

       For example,

	 example% ifconfig ip.tun0 inet6 plumb tsrc 109.146.85.57 \
	    tdst 109.146.85.212 up
	 example% ifconfig ip.tun0 inet6 addif 2::45 2::46 up

       To show all IPv6 interfaces that are up and configured:

	 example% ifconfig -au6
	 ip.tun0: flags=2200851<UP,POINTOPOINT,RUNNING,MULTICAST,NONUD,IPv6>
		    mtu 1480 index 3
		 inet tunnel src 109.146.85.57	 tunnel dst 109.146.85.212
		 tunnel security settings  -->	use 'ipsecconf -ln -i ip.tun1'
		 tunnel hop limit 60
		 inet6 fe80::6d92:5539/10 --> fe80::6d92:55d4
	 ip.tun0:1: flags=2200851<UP,POINTOPOINT,RUNNING,MULTICAST,NONUD,IPv6>
		   mtu 1480 index 3
		 inet6 2::45/128 --> 2::46

       In the output above, note the line that begins  with  "tunnel  security
       settings". The content of this line varies according to whether and how
       you have set your security settings. See "Display  of  Tunnel  Security
       Settings," below.

   Configuring IPv4/IPv6 Tunnels
       An  IPv4	 over  IPv6 tunnel interface can send and receive IPv4 packets
       encapsulated in an IPv6 packet. Create tunnels at both ends pointing to
       each other. IPv4 over IPv6 tunnels require the tunnel source and tunnel
       destination IPv6 and IPv4 addresses. The following  demonstrates	 auto-
       tunnel configuration:

	 example% ifconfig ip6.tun0 inet plumb tsrc my-ipv6-address \
	    tdst peer-ipv6-address my-ipv4-address \
	    peer-ipv4-address up

       This  creates  a	 configured  tunnel  between my-ipv6-address and peer-
       ipv6-address with my-ipv4-address and  peer-ipv4-address	 as  the  end‐
       points of the point-to-point interface, for example:

	 example% ifconfig ip6.tun0 inet plumb tsrc fe80::1 tdst fe80::2 \
	 10.0.0.208 10.0.0.210 up

       To show all IPv4 interfaces that are up and configured:

	 example% ifconfig -au4
	 lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
	      inet 127.0.0.1 netmask ff000000
	 eri0: flags=1004843<UP,BROADCAST,RUNNING,MULTICAST,DHCP,IPv4> mtu 1500 \
	 index 2
	      inet 172.17.128.208 netmask ffffff00 broadcast 172.17.128.255
	 ip6.tun0: flags=10008d1<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST,IPv4> \
	 mtu 1460
	      index 3
	      inet6 tunnel src fe80::1 tunnel dst fe80::2
	      tunnel security settings	-->  use 'ipsecconf -ln -i ip.tun1'
	      tunnel hop limit 60 tunnel encapsulation limit 4
	      inet 10.0.0.208 --> 10.0.0.210 netmask ff000000

       In  the	output	above, note the line that begins with "tunnel security
       settings". The content of this line varies according to whether and how
       you  have  set  your security settings. See "Display of Tunnel Security
       Settings," below.

   Display of Tunnel Security Settings
       The ifconfig output for tunneled	 interfaces  indicates	security  set‐
       tings,  if  present, for a tunnel. The content of the line showing your
       settings differs depending on how you have made your settings:

	   o	  If  you  set	your  security	policy	using	the   ifconfig
		  -auth_algs,  -encr_algs,  and -encr_auth_algs options and do
		  not use ipsecconf(1M), ifconfig displays your	 settings  for
		  each of these options.

	   o	  If you set your security policy using ipsecconf(1M) with the
		  tunnel keyword (the preferred method), ifconfig displays:

		    tunnel security settings  -->  use 'ipsecconf -ln -i ip.tun1'

		  ...in effect, hiding your settings from those without privi‐
		  leges to view them.

		  If  you do net set security policy, using either ifconfig or
		  ipsecconf, there is no tunnel security setting displayed.

EXAMPLES
       Example 1 Using the ifconfig Command

       If your workstation is not attached to an Ethernet, the network	inter‐
       face, for example, eri0, should be marked "down" as follows:

	 example% ifconfig eri0 down

       Example 2 Printing Addressing Information

       To  print  out  the  addressing information for each interface, use the
       following command:

	 example% ifconfig -a

       Example 3 Resetting the Broadcast Address

       To reset each interface's broadcast address  after  the	netmasks  have
       been correctly set, use the next command:

	 example% ifconfig -a broadcast +

       Example 4 Changing the Ethernet Address

       To  change  the	Ethernet  address for interface ce0, use the following
       command:

	 example% ifconfig ce0 ether aa:1:2:3:4:5

       Example 5 Configuring an IP-in-IP Tunnel

       To configure an IP-in-IP tunnel, first plumb it with the following com‐
       mand:

	 example% ifconfig ip.tun0 plumb

       Then  configure	it as a point-to-point interface, supplying the tunnel
       source and the tunnel destination:

	 example% ifconfig ip.tun0 myaddr mydestaddr tsrc another_myaddr \
		    tdst a_dest_addr up

       Use ipsecconf(1M), as described above,  to  configure  tunnel  security
       properties.

       Example 6 Configuring 6to4 Tunnels

       To configure 6to4 tunnels, use the following commands:

	 example% ifconfig ip.6to4tun0 inet6 plumb
	 example% ifconfig ip.6to4tun0 inet6 tsrc IPv4-address 6to4-address/64 up

       IPv4-address  denotes  the  address  of	the  encapsulating  interface.
       6to4-address denotes the address of the	local  IPv6  address  of  form
       2002:IPv4-address:SUBNET-ID:HOSTID.

       The  long  form	should be used to resolve any potential conflicts that
       might arise if the system administrator	utilizes  an  addressing  plan
       where  the  values  for	SUBNET-ID or HOSTID are reserved for something
       else.

       After the interface is plumbed, a 6to4 tunnel can be configured as fol‐
       lows:

	 example% ifconfig ip.6to4tun0 inet6 tsrc IPv4-address up

       This short form sets the address. It uses the convention:

	 2002:IPv4-address::1

       The SUBNET-ID is 0, and the HOSTID is 1.

       Example 7 Configuring IP Forwarding on an Interface

       To  enable  IP forwarding on a single interface, use the following com‐
       mand:

	 example% ifconfig eri0 router

       To disable IP forwarding on a single interface, use the following  com‐
       mand:

	 example% ifconfig eri0 -router

       Example	8  Configuring Source Address Selection Using a Virtual Inter‐
       face

       The following command configures source	address	 selection  such  that
       every packet that is locally generated with no bound source address and
       going out on qfe2 prefers a source address hosted on vni0.

	 example% ifconfig qfe2 usesrc vni0

       The ifconfig -a output for the qfe2 and	vni0  interfaces  displays  as
       follows:

	 qfe2: flags=1100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4> mtu
	   1500 index 4
	   usesrc vni0
	   inet 1.2.3.4 netmask ffffff00 broadcast 1.2.3.255
	   ether 0:3:ba:17:4b:e1
	 vni0: flags=20011100c1<UP,RUNNING,NOARP,NOXMIT,ROUTER,IPv4,VIRTUAL>
	   mtu 0 index 5
	   srcof qfe2
	   inet 3.4.5.6 netmask ffffffff

       Observe,	 above,	 the usesrc and srcof keywords in the ifconfig output.
       These keywords also appear on the logical  instances  of	 the  physical
       interface,  even	 though	 this  is  a per-physical interface parameter.
       There is no srcof keyword in ifconfig for configuring interfaces.  This
       information is determined automatically from the set of interfaces that
       have usesrc set on them.

       The following command, using the none keyword, undoes the effect of the
       preceding ifconfig usersrc command.

	 example% ifconfig qfe2 usesrc none

       Following this command, ifconfig -a output displays as follows:

	 qfe2: flags=1100843<UP,BROADCAST,RUNNING,MULTICAST,ROUTER,IPv4> mtu
	   1500 index 4
	   inet 1.2.3.4 netmask ffffff00 broadcast 1.2.3.255
	   ether 0:3:ba:17:4b:e1
	 vni0: flags=20011100c1<UP,RUNNING,NOARP,NOXMIT,ROUTER,IPv4,VIRTUAL>
	   mtu 0 index 5
	   inet 3.4.5.6 netmask ffffffff

       Note the absence of the usesrc and srcof keywords in the output above.

       Example 9 Configuring Source Address Selection for an IPv6 Address

       The  following  command configures source address selection for an IPv6
       address, selecting a source address hosted on vni0.

	 example% ifconfig qfe1 inet6 usesrc vni0

       Following this command, ifconfig -a output displays as follows:

	 qfe1: flags=2000841<UP,RUNNING,MULTICAST,IPv6> mtu 1500 index 3
	   usesrc vni0
	   inet6 fe80::203:baff:fe17:4be0/10
	   ether 0:3:ba:17:4b:e0
	 vni0: flags=2002210041<UP,RUNNING,NOXMIT,NONUD,IPv6,VIRTUAL> mtu 0
	   index 5
	   srcof qfe1
	   inet6 fe80::203:baff:fe17:4444/128
	 vni0:1: flags=2002210040<RUNNING,NOXMIT,NONUD,IPv6,VIRTUAL> mtu 0
	   index 5
	   srcof qfe1
	   inet6 fec0::203:baff:fe17:4444/128
	 vni0:2: flags=2002210040<RUNNING,NOXMIT,NONUD,IPv6,VIRTUAL> mtu 0
	   index 5
	   srcof qfe1
	   inet6 2000::203:baff:fe17:4444/128

       Depending on the scope of the destination of the packet	going  out  on
       qfe1, the appropriately scoped source address is selected from vni0 and
       its aliases.

       Example 10 Using Source Address Selection with Shared-IP Zones

       The following is an example of how the usesrc feature can be used  with
       the zones(5) facility in Solaris. The following commands are invoked in
       the global zone:

	 example% ifconfig hme0 usesrc vni0
	 example% ifconfig eri0 usesrc vni0
	 example% ifconfig qfe0 usesrc vni0

       Following the preceding commands, the ifconfig -a output for  the  vir‐
       tual interfaces would display as:

	 vni0: flags=20011100c1<UP,RUNNING,NOARP,NOXMIT,ROUTER,IPv4,VIRTUAL>
	    mtu 0 index 23
	    srcof hme0 eri0 qfe0
	    inet 10.0.0.1 netmask ffffffff
	 vni0:1:
	    flags=20011100c1<UP,RUNNING,NOARP,NOXMIT,ROUTER,IPv4,VIRTUAL> mtu 0
	    index 23
	    zone test1
	    srcof hme0 eri0 qfe0
	    inet 10.0.0.2 netmask ffffffff
	 vni0:2:
	    flags=20011100c1<UP,RUNNING,NOARP,NOXMIT,ROUTER,IPv4,VIRTUAL> mtu 0
	    index 23
	    zone test2
	    srcof hme0 eri0 qfe0
	    inet 10.0.0.3 netmask ffffffff
	 vni0:3:
	    flags=20011100c1<UP,RUNNING,NOARP,NOXMIT,ROUTER,IPv4,VIRTUAL> mtu 0
	    index 23
	    zone test3
	    srcof hme0 eri0 qfe0
	    inet 10.0.0.4 netmask ffffffff

       There  is  one  virtual	interface  alias  per  zone (test1, test2, and
       test3). A source address from the virtual interface alias in  the  same
       zone  is	 selected.  The	 virtual  interface aliases were created using
       zonecfg(1M) as follows:

	 example% zonecfg -z test1
	 zonecfg:test1> add net
	 zonecfg:test1:net> set physical=vni0
	 zonecfg:test1:net> set address=10.0.0.2

       The test2 and test3 zone interfaces and addresses are  created  in  the
       same way.

       Example 11 Turning Off DHCPv6

       The  following  example shows how to disable automatic use of DHCPv6 on
       all interfaces, and immediately shut down DHCPv6 on the interface named
       hme0.  See  in.ndpd(1M)	and  ndpd.conf(4)  for more information on the
       automatic DHCPv6 configuration mechanism.

	 example% echo ifdefault StatefulAddrConf false >> /etc/inet/ndpd.conf
	 example% pkill -HUP -x in.ndpd
	 example% ifconfig hme0 dhcp release

FILES
       /etc/netmasks

	   Netmask data.

       /etc/default/inet_type

	   Default Internet protocol type.

ATTRIBUTES
       See attributes(5) for descriptions of the following attributes:

       ┌───────────────────────────────────────┬──────────────────────────────┐
       │	    ATTRIBUTE TYPE	       │       ATTRIBUTE VALUE	      │
       ├───────────────────────────────────────┼──────────────────────────────┤
       │Availability			       │ SUNWcsu		      │
       ├───────────────────────────────────────┼──────────────────────────────┤
       │Interface Stability  for  command-line │ Committed		      │
       │options				       │			      │
       ├───────────────────────────────────────┼──────────────────────────────┤
       │Interface Stability for command output │ Uncommitted		      │
       └───────────────────────────────────────┴──────────────────────────────┘

SEE ALSO
       dhcpinfo(1),   dhcpagent(1M),  dladm(1M),  in.mpathd(1M),  in.ndpd(1M),
       in.routed(1M),  ipsecconf(1M),	ndd(1M),   netstat(1M),	  zoneadm(1M),
       zonecfg(1M),	ethers(3SOCKET),     gethostbyname(3NSL),    getnetby‐
       name(3SOCKET), hosts(4), inet_type(4), ndpd.conf(4), netmasks(4),  net‐
       works(4),  nsswitch.conf(4),  attributes(5),  privileges(5),  zones(5),
       arp(7P), ipsecah(7P), ipsecesp(7P), tun(7M)

DIAGNOSTICS
       ifconfig sends messages that indicate if:

	   o	  the specified interface does not exist

	   o	  the requested address is unknown

	   o	  the user is not privileged and tried to alter an interface's
		  configuration

NOTES
       Do not select the names broadcast, down, private, trailers, up or other
       possible option names when you choose host names. If you choose any one
       of  these  names	 as host names, it can cause unusual problems that are
       extremely difficult to diagnose.

SunOS 5.10			  2 Jun 2009			  ifconfig(1M)
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