ref: b6b5fd6da79aff13f7ebded1ae49124743411271
dir: /rc/bin/ipv6on/
#!/bin/rc
# ipv6on [netdir ndbfile [gwv4]] - configure an interface for ipv6,
# once ipv4 is configured.
if (! ~ $#* 0 2 3) {
echo usage: $0 '[netdir ndbfile [gw-v4-name]]' >[1=2]
exit usage
}
rfork e
if (~ $#* 0) {
netdir=/net
ndbf=/lib/ndb/local
gw=`{ndb/ipquery sys $sysname ipgw | sed 's/ipgw=//'}
}
if not {
netdir=$1
ndbf=$2
if (~ $#* 2)
# gw=()
gw=`{ndb/ipquery sys $sysname ipgw | sed 's/ipgw=//'}
if not
gw=$3
}
if (~ $netdir /net) {
xsfx=()
xdir=()
}
if not {
xsfx=(-x `{echo $netdir | sed 's;^/net;;'})
xdir=(-x $netdir)
}
fn nonnil { # variable
if (~ $#$1 0) {
echo no ip for $1
exit no-ip
}
if (! ~ $#$1 1) {
echo multiple ips for $1
exit multiple-ips
}
}
#
# configure v6 for link-local addresses (fe80::) & multicast (ff02::)
#
if (! ip/ipconfig -6 $xdir ether $netdir/ether?)
exit 'ipconfig -6 failed'
ip/ipconfig $xdir ether $netdir/ether? ra6 recvra 1
mev6=`{ndb/query -f $ndbf sys $sysname ipv6}
if (~ $#mev6 0 || ~ $mev6 '')
mev6=`{ndb/query -mf $ndbf sys $sysname ip | grep :}
# mev4=`{ndb/query -f $ndbf sys $sysname ip | grep -v :}
# for testing
mylnk=`{ip/linklocal `{cat $netdir/ether?/addr}}
nonnil mylnk
if (~ $#gw 1) {
if (~ $gw [0-9]*.[0-9]*.[0-9]*.[0-9]*)
gwv4 = $gw
if (~ $#gwv4 0 || ~ $gwv4 '') # assume namev6 and name
gwv4=`{ndb/query -f $ndbf sys $gw ip}
gwv6=`{ndb/query -f $ndbf sys $gw ipv6}
if (! ~ $#gwv4 0) {
# echo ping gw $gwv4...
# load arp cache with gw mac
ip/ping -qn 3 $netdir/icmp!$gwv4 >/dev/null >[2=1] &
sleep 1 # wait for ping
gweth=`{grep '* '^$gwv4^' ' $netdir/arp | awk '{print $4}' }
nonnil gweth
gwlnk=`{ip/linklocal $gweth}
nonnil gwlnk
}
}
nonnil mev6
#
# configure my global v6 addresses
#
ip/ipconfig $xdir ether $netdir/ether? add $mev6 /64
ip/ipconfig $xdir loopback /dev/null add $mev6 /128
if (~ $#gw 1) {
if (~ $#gwv6 0 || ~ $gwv6 '')
gwv6=`{ip/linklocal $gweth}
nonnil gwv6
#
# add default v6 route to v6 addr of v4 gw
#
echo add :: /0 $gwv6 >$netdir/iproute # need not be link-local
}
exit ''