Helper script to launch v6 over v4 and radvd sequentially

homev6.sh

#!/bin/bash

ETH="p1p1"
NET6SCRPATH="/usr/local/bin/iij-ipv6-up"

$NET6SCRPATH

NET6PREFIX=$(ip -6 addr show dev ppp128 scope global | grep inet6 | sed -e s/^\ \*inet6\ //g -e s/\ .\*\$//g -e s/\\\(:[0-9a-f]*\\\)\\{4\\}\\/64//g)"::/64"

sysctl net.ipv6.conf.all.forwarding=1

echo "interface $ETH
{
	AdvSendAdvert on;
	MinRtrAdvInterval 30;
	MaxRtrAdvInterval 100;
	prefix $NET6PREFIX {};
	RDNSS 2001:240::13 2001:240::14 {};
};" > /etc/radvd.conf

killall radvd
radvd

route --inet6 add $NET6PREFIX $ETH
route --inet6 add default ppp128