#!/bin/sh

YETI_DEVICE=eth1
YETI_SERVICE=2001:4b98:dc2:45:216:3eff:fe4b:8c5b
YETI_TABLE=Yeti-DNS
USE_RDISC6=yes

# Apparently not always done automatically
ifconfig ${YETI_DEVICE} up

if [ "${USE_RDISC6}" = "yes" ]; then
    sleep 30
    ROUTER=$(rdisc6 --single ${YETI_DEVICE} | awk '/^ from/ {print $2}')
else
    # Does not work, ip -6 neigh returns other machines which are not routers
    #ROUTER=$(ping6 -c1 -I ${YETI_DEVICE} ff02::1 > /dev/null; ip -6 neigh  | awk "/dev ${YETI_DEVICE}.*router REACHABL
E/ {print \$1}" | tail -n 1)
    sysctl -w net.ipv6.conf.eth1.accept_ra_defrtr=1
    ROUTER=$(ping6 -c1 -I ${YETI_DEVICE} ff02::1 > /dev/null; ip -6 route | awk "/^default.*dev ${YETI_DEVICE}.*proto r
a/ {print \$3}" | tail -n 1)
fi

if [ -z "${ROUTER}" ]; then
    echo "Cannot find IPv6 router on ${YETI_DEVICE}"
    exit 1
fi

if [ "${USE_RDISC6}" != "yes" ]; then
    sysctl -w net.ipv6.conf.eth1.accept_ra_defrtr=0
fi

echo 200 ${YETI_TABLE} >> /etc/iproute2/rt_tables
ip -6 rule add from ${YETI_SERVICE} table ${YETI_TABLE}
ip -6 route add default via ${ROUTER} dev ${YETI_DEVICE} table ${YETI_TABLE}
ip -6 route flush cache