i've just created a simple link checker script for linux. just add the following script to your /etc/cron.hourly ---cut-here--- POPIPv6="2001:15c0:65ff:17::1" # POP IPv6 RunIPv6="/etc/rc.d/rc.ipv6 restart" # path to your IPv6 restart script ping6 -c 1 $POPIPv6 if [ $? -ne 0 ] then $RunIPv6 #just uncomment following three lines to send mail notification #mail -s 'IPv6 restart' root@localhost << EOF #IPv6 pinging failed. Restarting ipv6 connection... #EOF fi ---cut-here--- this script is fully flexibile and can be updated with some sort of mailer to notify about link condition, ... hope it helps anyone out there...