fix-conoha-v6-route.sh

#!/bin/bash
#########################################################################
# File Name: fix-conoha-v6-route.sh
# Author: LI JIAHAO
# ###############
# Mail: [email protected]
# Created Time: Mon 12 Feb 2018 04:59:12 PM CST
#########################################################################

#route_cmd='cat ip6route'
route_cmd='ip -6 route'
declare -i try_times=10

while (( $try_times > 0 )); do

has_fd00=`$route_cmd`

if [[ "$has_fd00" =~ 'fd00::' ]]; then
    try_times=0
else
    sleep 5
    try_times=$try_times-1
fi

echo $has_fd00
echo $try_times

done

has_default=`$route_cmd | sed -n "s/\(default\) via .* dev eth0  proto ra.*/\1/p"`

if [ "$has_default" != 'default' ]; then
    ipsuffix=`$route_cmd | sed -n "s/.*2.*:\([0-9]\+\):\+\/[0-9]\+ dev eth0  proto kernel.*/\1/p"`
    ip="fe80::$ipsuffix:1"
    cmd="$route_cmd add default via $ip dev eth0  proto ra"
    $cmd
fi