#!/bin/sh - # # $OpenBSD: netstart,v 1.62 2000/01/02 06:50:09 deraadt Exp $ # Returns true if $1 contains only alphanumerics isalphanumeric() { local _n _n=$1 while [ ${#_n} != 0 ]; do case $_n in [A-Za-z0-9]*) ;; *) return 1;; esac _n=${_n#?} done return 0 } # /etc/myname contains my symbolic name # hostname=`cat /etc/myname` hostname $hostname if [ -f /etc/defaultdomain ]; then domainname `cat /etc/defaultdomain` fi # pick up option configuration . /etc/rc.conf # Configure the IP filter before configuring network interfaces if [ X"${ipfilter}" = X"YES" -a -f "${ipfilter_rules}" ]; then echo 'configuring IP filter' ipf -Fa -f ${ipfilter_rules} -E else ipfilter=NO fi # set the address for the loopback interface # it will also initialize IPv6 address for lo0 (::1 and others). ifconfig lo0 inet localhost # use loopback, not the wire route -n add -host $hostname localhost route -n add -net 127 127.0.0.1 -reject if ifconfig lo0 inet6 >/dev/null 2>&1; then # IPv6 configurations. ip6kernel=YES # disallow scoped unicast dest without outgoing scope identifiers. route add -inet6 fe80:: -prefixlen 10 ::1 -reject route add -inet6 fc80:: -prefixlen 10 ::1 -reject # disallow "internal" addresses to appear on the wire. route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject rtsolif="" else ip6kernel=NO fi # configure all of the non-loopback interfaces which we know about. # refer to hostname.if(5) and bridgename.if(5) for hn in /etc/hostname.*; do # Strip off /etc/hostname. prefix if=${hn#/etc/hostname.} # Interface names must be alphanumeric only. We check to avoid # configuring backup or temp files, and to catch the "*" case. if ! isalphanumeric "$if"; then continue fi ifconfig $if > /dev/null 2>&1 if [ "$?" != "0" ]; then continue fi # Now parse the hostname.* file while :; do if [ "$cmd2" ]; then # we are carrying over from the 'read dt dtaddr' last time set -- $cmd2 af="$1" name="$2" mask="$3" bcaddr="$4" ext1="$5" ext2="$6" cmd2= else # read the next line or exit the while loop read af name mask bcaddr ext1 ext2 || break fi # skip comments [ "${af#*#}" = "${af}" ] || continue # $af can be either "dhcp", "up" or an address family. case "$af" in "bridge") cmd="echo ${hn}: bridges now supported via bridgename.* files" ;; "dhcp") ifconfig $if $name $mask $bcaddr $ext1 $ext2 down cmd="dhclient $if" ;; "rtsol") ifconfig $if $name $mask $bcaddr $ext1 $ext2 up rtsolif="$rtsolif $if" cmd= ;; "up") # The only one of these guaranteed to be set is $if # the remaining ones exist so that media controls work cmd="ifconfig $if $name $mask $bcaddr $ext1 $ext2 up" ;; *) read dt dtaddr if [ "$name" = "alias" ]; then # perform a 'shift' of sorts alias=$name name=$mask mask=$bcaddr bcaddr=$ext1 ext1=$ext2 ext2= fi cmd="ifconfig $if $af $alias $name " case $dt in dest) cmd="$cmd $dtaddr" ;; [a-z]*) cmd2="$dt $dtaddr" ;; esac if [ ! -n "$name" ]; then echo "/etc/hostname.$if: invalid network configuration file" return fi case $af in inet) [ "$mask" ] && cmd="$cmd netmask $mask" if [ "$bcaddr" -a "X$bcaddr" != "XNONE" ]; then cmd="$cmd broadcast $bcaddr" fi [ "$alias" ] && rtcmd="; route -n add -host $name 127.0.0.1" ;; inet6) [ "$mask" ] && cmd="$cmd prefixlen $mask" cmd="$cmd $bcaddr" ;; *) cmd="$cmd $mask $bcaddr" esac cmd="$cmd $ext1 $ext2$rtcmd" rtcmd= ;; esac eval "$cmd" done < /etc/hostname.$if done if [ "$ip6kernel" = "YES" -a "x$rtsolif" != "x" ]; then fw=`sysctl -n net.inet6.ip6.forwarding` ra=`sysctl -n net.inet6.ip6.accept_rtadv` if [ "x$fw" = "x0" -a "x$ra" = "x1" ]; then echo "IPv6 autoconf:$rtsolif" rtsol $rtsolif else echo "WARNING: inconsistent config - check /etc/sysctl.conf for IPv6 autoconf" fi fi if [ "$ip6kernel" = "YES" ]; then # this is to make sure DAD is completed before going further. sleep `sysctl -n net.inet6.ip6.dad_count` sleep 1 fi for bn in /etc/bridgename.*; do # Strip off /etc/bridgename. prefix if=${bn#/etc/bridgename.} # Interface names must be alphanumeric only. We check to avoid # configuring backup or temp files, and to catch the "*" case. if ! isalphanumeric "$if"; then continue fi brconfig $if > /dev/null 2>&1 if [ "$?" != "0" ]; then continue fi # Now parse the bridgename.* file { # All lines are run as brconfig(8) commands. while read line ; do line=${line%%#*} # strip comments test -z "$line" && continue brconfig $if $line done } < /etc/bridgename.$if done # /etc/mygate, if it exists, contains the name of my gateway host # that name must be in /etc/hosts. if [ -f /etc/mygate ]; then route -n add -host default `cat /etc/mygate` fi # Multicast routing. # # The routing to the 224.0.0.0/4 net is setup according to these rules: # multicast_host multicast_router route comment # NO NO -reject no multicast # NO YES none installed daemon will run # YES/interface NO -interface YES=def. iface # Any other combination -reject config error case "$multicast_host:$multicast_router" in NO:NO) route -n add -net 224.0.0.0/4 -interface 127.0.0.1 -reject;; NO:YES) ;; *:NO) set `if [ $multicast_host = YES ]; then ed -s '!route -n show' <