NETSTART(8) OpenBSD System Manager's Manual NETSTART(8)NAMEnetstart - command script for network startup
SYNOPSIS
/etc/netstart [interface ...]
DESCRIPTIONnetstart is the command script that is invoked by rc(8) during an
automatic reboot and after single user mode is exited; it performs
network initialization.
The netstart script can also be used to start newly created bridges or
interfaces, or reset existing interfaces to their default state. The
behaviour of this script is (or can be) controlled to some extent by
variables defined in /etc/rc.conf, which specifies which daemons and
services are to be run.
During the system boot, netstart is executed. netstart performs the
following operations, in the sequence given:
o Set the machine's name.
o Configure the loopback interface.
o Configure all the physical interfaces.
o Configure the following non-physical interfaces: trunk(4),
vlan(4), pfsync(4), and carp(4).
o Initialize the routing table and set up the default routes.
o Configure the remaining non-physical interfaces: pppoe(4),
gif(4), and gre(4).
o Configure all bridge(4) interfaces.
After the system is completely initialized, it is possible to start a
newly created interface or bridge(4), or reset an existing interface to
its default state, by invoking the following, where foo0 is the interface
or bridge name:
# sh /etc/netstart foo0
MULTICAST ROUTING
To enable multicast(4) routing, the net.inet.ip.mforwarding and/or
net.inet.ip6.mforwarding sysctl(8) variables should be set to 1. Routing
to the 224.0.0.0/4 net is set up using values from /etc/rc.conf according
to these rules:
o The default. If the multicast settings are as follows then multicast
routing will not be enabled.
multicast_host=NO
multicast_router=NO
o If the multicast settings are as follows then multicast routing will
be enabled, but no multicast route will be set up. It is expected
that a routing daemon, such as mrouted(8), will be started as well.
multicast_host=NO
multicast_router=YES
o If the multicast settings are as follows then multicast routing will
be enabled, using the default interface, or the interface name
specified by multicast_host.
multicast_host=YES
multicast_router=NO
or:
multicast_host=foo0 # interface name
multicast_router=NO
o Other cases are configuration errors and will cause multicast routing
not to be enabled.
SEE ALSOmulticast(4), defaultdomain(5), hostname.if(5), myname(5), ifconfig(8),
rc(8), rc.conf(8)HISTORY
The netstart command first appeared in 4.0BSD.
OpenBSD 4.9 February 10, 2011 OpenBSD 4.9
