#!/bin/sh # # $NetBSD: network,v 1.11 2000/05/13 08:45:07 lukem Exp $ # # PROVIDE: network # REQUIRE: root mountcritlocal tty sysctl . /etc/rc.subr name="network" start_cmd="network_start" stop_cmd=":" network_start() { # set hostname, turn on network # echo "Starting network." # If $hostname is set, use it for my Internet name, # otherwise use /etc/myname # if [ -z "$hostname" -a -f /etc/myname ]; then hostname=`cat /etc/myname` fi if [ -n "$hostname" ]; then echo "Hostname: $hostname" hostname $hostname else # Don't warn about it if we're going to run # DHCP later, as we will probably get the # hostname at that time. # if ! checkyesno dhclient; then warn "\$hostname not set." fi fi # Check $domainname first, then /etc/defaultdomain, # for NIS/YP domain name # if [ -z "$domainname" -a -f /etc/defaultdomain ]; then domainname=`cat /etc/defaultdomain` fi if [ -n "$domainname" ]; then echo "NIS domainname: $domainname" domainname $domainname fi # Flush all routes just to make sure it is clean if checkyesno flushroutes; then route -n flush 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. # # NOTE: obscure networking problems may occur if lo0 isn't configured... # ifconfig lo0 inet 127.0.0.1 # According to RFC1122, 127.0.0.0/8 should not leave the node. # route add -inet 127.0.0.0 -netmask 0xff000000 127.0.0.1 -reject # Configure all of the network interfaces listed in $net_interfaces; # if $auto_ifconfig is YES, 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 $ifconfig_xxN". # If there is no such variable, we take the contents of the file # /etc/ifconfig.xxN, and run "ifconfig xxN" repeatedly, using each # line of the file as the arguments for a seperate "ifconfig" # invocation. # # In order to configure an interface reasonably, you at the very least # need to specify "[addr_family] [hostname]" (e.g "inet my.domain.org"), # and probably a netmask (as in "netmask 0xffffffe0"). You will # frequently need to specify a media type, as in "media UTP", for # interface cards with multiple media connections that do not # autoconfigure. See the ifconfig manual page for details. # # Note that /etc/ifconfig.xxN takes multiple lines. The following # configuration is possible: # inet 10.1.1.1 netmask 0xffffff00 # inet 10.1.1.2 netmask 0xffffff00 alias # inet6 fec0::1 prefixlen 64 alias # if [ "$net_interfaces" != NO ]; then if checkyesno auto_ifconfig; 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 " $int" (while read args; do if [ -n "`eval echo '$args'`" ] ; then ifconfig $int $args fi done) < /etc/ifconfig.$int else if ! checkyesno auto_ifconfig; then echo warn \ "/etc/ifconfig.$int missing and ifconfig_$int not set;" warn "interface $int not configured." fi continue fi configured_interfaces="$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. # # Note that $ifaliases_xxN works only with certain configurations and # considered not recommended. Use /etc/ifconfig.xxN if possible. # # if [ -n "$configured_interfaces" ]; then echo "Adding interface aliases:" done_aliases_message=yes 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 $addr 127.0.0.1 done fi done # /etc/ifaliases, if it exists, contains the names of additional IP # addresses for each interface. It is formatted as a series of lines # that contain # address interface netmask # # Note that /etc/ifaliases works only with certain cases only and its # use is not recommended. Use /etc/ifconfig.xxN instead. # # if [ -f /etc/ifaliases ]; then ( if [ "$done_aliases_message" != yes ]; then echo "Adding interface aliases:" fi 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 127.0.0.1 done ) < /etc/ifaliases fi # IPv6 # Note that manual configuration can be done in the above, using # ifconfig. # if ifconfig lo0 inet6 >/dev/null 2>&1; then # We have IPv6 support in kernel. # disallow link-local unicast dest without outgoing scope # identifiers. # route add -inet6 fe80:: -prefixlen 10 ::1 -reject # disallow site-local unicast dest without outgoing scope # identifiers. # If you configure site-locals without scope id (it is # permissible config for routers that are not on scope # boundary), you may want to comment the following one out. # route add -inet6 fec0:: -prefixlen 10 ::1 -reject # disallow "internal" addresses to appear on the wire. # route add -inet6 ::ffff:0.0.0.0 -prefixlen 96 ::1 -reject # disallow packets to malicious IPv4 compatible prefix # route add -inet6 ::224.0.0.0 -prefixlen 100 ::1 -reject route add -inet6 ::127.0.0.0 -prefixlen 104 ::1 -reject route add -inet6 ::0.0.0.0 -prefixlen 104 ::1 -reject route add -inet6 ::255.0.0.0 -prefixlen 104 ::1 -reject # disallow packets to malicious 6to4 prefix # route add -inet6 2002:e000:: -prefixlen 20 ::1 -reject route add -inet6 2002:7f00:: -prefixlen 24 ::1 -reject route add -inet6 2002:0000:: -prefixlen 24 ::1 -reject route add -inet6 2002:ff00:: -prefixlen 24 ::1 -reject # Completely disallow packets to IPv4 compatible prefix. # This may conflict with RFC1933 under following circumstances: # (1) An IPv6-only KAME node tries to originate packets to IPv4 # comatible destination. The KAME node has no IPv4 # compatible support. Under RFC1933, it should transmit # native IPv6 packets toward IPv4 compatible destination, # hoping it would reach a router that forwards the packet # toward auto-tunnel interface. # (2) An IPv6-only node originates a packet to IPv4 compatible # destination. A KAME node is acting as an IPv6 router, and # asked to forward it. # Due to rare use of IPv4 compatible address, and security # issues with it, we disable it by default. # route add -inet6 ::0.0.0.0 -prefixlen 96 ::1 -reject sysctl -w net.inet6.ip6.forwarding=0 >/dev/null sysctl -w net.inet6.ip6.accept_rtadv=0 >/dev/null # backward compatibility # if [ -z "$ip6mode" -a -n "$ip6forwarding" ]; then warn 'Please migrate to newer rc.conf' \ '(use ip6mode, not ip6forwarding)' if checkyesno ip6forwarding; then ip6mode=router else if checkyesno rtsol; then ip6mode=autohost else ip6mode=host fi fi fi case $ip6mode in router) echo 'IPv6 mode: router' sysctl -w net.inet6.ip6.forwarding=1 >/dev/null ;; autohost) echo 'IPv6 mode: autoconfigured host' sysctl -w net.inet6.ip6.accept_rtadv=1 >/dev/null if [ -n "$ip6defaultif" ]; then ndp -I $ip6defaultif fi ;; host) echo 'IPv6 mode: host' if [ -n "$ip6defaultif" ]; then ndp -I $ip6defaultif fi ;; *) echo 'WARNING: invalid value in ip6mode' ;; esac if checkyesno rtsol; then if [ "$ip6mode" = "autohost" ]; then echo 'Sending router solicitation...' rtsol $rtsol_flags else echo warn \ "ip6mode must be set to 'autohost' to use rtsol." fi fi # wait till DAD is completed. always invoke it in case if are # configured manually by ifconfig # dadcount=`sysctl -n net.inet6.ip6.dad_count 2>/dev/null` sleep $dadcount sleep 1 fi # XXX this must die if [ -s /etc/netstart.local ]; then sh /etc/netstart.local start fi } network_stop() { echo "Stopping network." # XXX this must die if [ -s /etc/netstart.local ]; then sh /etc/netstart.local stop fi echo "Deleting aliases." if [ -f /etc/ifaliases ]; then ( while read addr int net; do ifconfig $int inet delete $addr done ) < /etc/ifaliases 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 ifconfig $int inet delete $addr done fi done # down interfaces # echo -n 'Downing network interfaces:' if [ "$net_interfaces" != NO ]; then if checkyesno auto_ifconfig; then tmp="`ifconfig -l`" else tmp="$net_interfaces" fi for int in $tmp; do eval `echo 'args=$ifconfig_'$int` if [ -n "$args" ] || [ -f /etc/ifconfig.$int ]; then echo -n " $int" ifconfig $int down fi done echo "." fi # flush routes # route -n flush } load_rc_config $name run_rc_command "$1"