NetBSD/etc/netstart

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#!/bin/sh -
#
# $NetBSD: netstart,v 1.41 1997/08/04 06:09:49 lukem Exp $
# from: @(#)netstart 8.1 (Berkeley) 7/23/93
if [ -f /etc/rc.conf ]; then
. /etc/rc.conf
fi
# If $hostname is set, use it for my symbolic name, otherwise use /etc/myname
if [ -z "$hostname" ]; then
hostname=`cat /etc/myname`
fi
echo "hostname: $hostname"
hostname $hostname
# Check $domainname first, then /etc/defaultdomain, for domain name
if [ -z "$domainname" -a -f /etc/defaultdomain ]; then
domainname=`cat /etc/defaultdomain`
fi
if [ -n "$domainname" ]; then
echo "domainname: $domainname"
domainname $domainname
fi
# Flush all routes just to make sure it is clean
if [ "$flushroutes" = YES ]; then
route flush
fi
# Enable, flush and install packet filter rules before configuring interfaces.
if [ "$ipfilter" != NO ] && [ -f /etc/ipf.conf ]; then
echo 'installing packet filter rules ... '
ipf -E -Fa -f /etc/ipf.conf
fi
# Set the address for the first loopback interface, so that the auto-route
# from a newly configured interface's address to lo0 works correctly.
ifconfig lo0 inet localhost
# Configure all of the network interfaces listed in $net_interfaces;
# if $net_interfaces is DEFAULT, grab all interfaces from ifconfig.
# In the following, "xxN" stands in for interface names, like "le0".
# For any interfaces that has an $ifconfig_xxN variable associated,
# we do "ifconfig xxN $ifconfig_xxN".
# If there is no such variable, we take the contents of the file
# /etc/ifconfig.xxN, and run "ifconfig xxN" repeatedly, using each
# line of the file as the arguments for a seperate "ifconfig" invocation.
#
# In order to configure an interface reasonably, you at the very least
# need to specify "[addr_family] [hostname]" (as in "inet my.domain.org"),
# and probably a netmask (as in "netmask 0xffffffe0"). You will
# frequently need to specify a media type, as in "media UTP", for
# interface cards with multiple media connections that do not autoconfigure.
# see the ifconfig manual page for details.
if [ "$net_interfaces" != NO ]; then
if [ "$net_interfaces" = DEFAULT ]; then
tmp="`ifconfig -l`"
else
tmp="$net_interfaces"
fi
echo -n 'configuring network interfaces:'
for int in $tmp; do
eval `echo 'args=$ifconfig_'$int`
if [ -n "$args" ]; then
echo -n " $int"
ifconfig $int $args
elif [ -f /etc/ifconfig.$int ]; then
echo -n " $int"
(while read args; do
ifconfig $int $args
done) < /etc/ifconfig.$int
else
if [ "$net_interfaces" != DEFAULT ]; then
echo
echo -n "/etc/ifconfig.$int missing"
echo -n "& ifconfig_$int not set"
echo "; interface $int can't be configured"
fi
continue
fi
configured_interfaces="$configured_interfaces $int"
done
echo '.'
fi
# Check $defaultroute, then /etc/mygate, for the name of my gateway host.
# That name must be in /etc/hosts.
if [ -z "$defaultroute" -a -f /etc/mygate ]; then
defaultroute=`cat /etc/mygate`
fi
if [ -n "$defaultroute" ]; then
route add default $defaultroute
fi
# Check if each configured interface xxN has an $ifaliases_xxN variable
# associated, then configure additional IP addresses for that interface.
# The variable contains a list of "address netmask" pairs, with "netmask"
# set to "-" if the interface default netmask is to be used.
#
if [ -n "$configured_interfaces" ]; then
echo 'adding interface aliases:';
fi
for int in $configured_interfaces; do
eval `echo 'args=$ifaliases_'$int`
if [ -n "$args" ]; then
set -- $args
while [ $# -ge 2 ]; do
addr=$1 ; net=$2 ; shift 2
if [ "$net" = "-" ]; then
ifconfig $int inet alias $addr
else
ifconfig $int inet alias $addr netmask $net
fi
# Use loopback, not the wire
route add $addr localhost
done
fi
done
# /etc/ifaliases, if it exists, contains the names of additional IP
# addresses for each interface. It is formatted as a series of lines
# that contain
# address interface netmask
if [ -f /etc/ifaliases ]; then
echo 'adding interface aliases:';
(
while read addr int net; do
if [ -z "$net" ]; then
ifconfig $int inet alias $addr
else
ifconfig $int inet alias $addr netmask $net
fi
# use loopback, not the wire
route add $addr localhost
done
) < /etc/ifaliases
fi
if [ -s /etc/netstart.local ]; then
. /etc/netstart.local
fi