Today, my co-location provider and I set my server to go NATIVE IPv6 (and we use HE's network for that too - via BGP peering with AS27630). Apparently, I am their first customer to have the native IPv6 turned on. They suggested that I hold onto my HE IPV6 tunnel in case of outages, etc.... As long as I continue to respond to the pings, is it a problem holding onto a single tunnel that will have no other traffic (beyond the pings)?
PS: As their infrastructure is still being set up, I believe that my packets may be the first non-test traffic of the /32 to cross your network. ;)
Feel free to keep a tunnel for any reason :D
Kudos on going native!