Here’s a script I wrote that will check the IP address of my FIOS connected firewall, update DNS and IPv6 tunnel settings and send me an email. This script assumes you have control of a DNS server somewhere that has resource records related to your firewall host. I use he.net’s tunnelbroker for my IPv6 tunnel and this script uses their facility to update the tunnel end point configuration and then restarts the tunnel on my side. Details and script are below.
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