NETWORKMANAGER(8)NETWORKMANAGER(8)NAMENetworkManager - network management daemon
SYNOPSISNetworkManager [--no-daemon]
DESCRIPTION
The NetworkManager daemon attempts to make networking configuration
and operation as painless and automatic as possible by managing the
primary network connection and other network interfaces, like Ethernet,
WiFi, and Mobile Broadband devices. NetworkManager will connect any
network device when a connection for that device becomes available,
unless that behavior is disabled. Information about networking is
exported via a D-Bus interface to any interested application, providing
a rich API with which to inspect and control network settings and oper‐
ation.
NetworkManager will execute scripts in the /etc/NetworkManager/dis‐
patcher.d
directory in alphabetical order in response to network events.
Each script should be (a) a regular file, (b) owned by root, (c)
not writable by group or other, (d) not set-uid, (e) and exe‐
cutable by the owner. Each script receives two arguments, the
first being the interface name of the device just activated, and
second an action.
up The interface has been activated. The environment contains more
information about the interface; CONNECTION_UUID contains the
UUID of the connection. Other variables are IP4_ADDRESS_N where
N is a number from 0 to (# IPv4 addresses - 1), in the format
"address/prefix gateway". IP4_NUM_ADDRESSES contains the number
addresses the script may expect. IP4_NAMESERVERS contains a
space-separated list of the DNS servers, and IP4_DOMAINS con‐
tains a space-separated list of the search domains. Routes use
the format IP4_ROUTE_N where N is a number from 0 to (# IPv4
routes - 1), in the format "address/prefix next-hop metric", and
IP4_NUM_ROUTES contains the number of routes to expect. If the
connection used DHCP for address configuration, the received
DHCP configuration is passed in the environment using standard
DHCP option names, prefixed with "DHCP4_", like
"DHCP4_HOST_NAME=foobar".
down The interface has been deactivated.
vpn-up A VPN connection has been activated. The environment contains
the connection UUID in the variable CONNECTION_UUID.
vpn-down
A VPN connection has been deactivated.
hostname
The system hostname has been updated. Use gethostname(2) to
retrieve it.
OPTIONS
The following options are supported:
--no-daemon
Do not daemonize. This is useful for debugging, and directs log
output to the controlling terminal in addition to syslog.
DEBUGGING
The following environment variables are supported to help debugging.
When used in conjunction with the "--no-daemon" option (thus echoing
PPP and DHCP helper output to stdout) these can quickly help pinpoint
the source of connection issues.
NM_SERIAL_DEBUG
When set to anything, causes NetworkManager to log all serial
communication to and from serial devices like mobile broadband
3G modems.
NM_PPP_DEBUG
When set to anything, causes NetworkManager to turn on PPP
debugging in pppd, which logs all PPP and PPTP frames and
client/server exchanges.
SEE ALSOnm-tool(1)NETWORKMANAGER(8)
