etc-gentoo/init.d/._cfg0001_loopback

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#!/sbin/openrc-run
# Copyright (c) 2013 William Hubbs <w.d.hubbs@gmail.com>
# Released under the 2-clause BSD license.
description="Configures the loopback interface."
depend()
{
keyword -jail -prefix -systemd-nspawn -vserver
}
start()
{
if [ "$RC_UNAME" = Linux ]; then
ebegin "Bringing up network interface lo"
if command -v ip > /dev/null 2>&1; then
ip addr add 127.0.0.1/8 dev lo brd + scope host
ip route add 127.0.0.0/8 dev lo scope host
ip link set lo up
else
ifconfig lo 127.0.0.1 netmask 255.0.0.0
route add -net 127.0.0.0 netmask 255.0.0.0 gw 127.0.0.1
fi
else
ebegin "Bringing up network interface lo0"
ifconfig lo0 127.0.0.1 netmask 255.0.0.0
route -q add -inet 127.0.0.0 -netmask 255.0.0.0 127.0.0.1
fi
eend $?
}
stop()
{
return 0
}