Yes, I have successful IPv6 connectivity to my own hosts (HE.net tunnels), and other IPv6 hosts. I'll do some more checking tonight when I am back at the house. I have had an issue with rfc1323 on this setup when I was on Time Warner and had mis-matched MTU/MSS. That may have re-surfaced here on SuddenLink with you. I'll play with rfc1323 and such.