said by EmoHobo:It looks like the ipv6 is for whatever reason skipping the first step, which is in my case a modem and router all in one gateway, it is a Technicolor TC8305c
I can not imagine what the TC8305c (or your PC's IPv6 stack) could be doing with a native IPv6 connection that would make the TC8305c invisible on an outbound traceroute (you should at least see a * * * Request timed out message). And since I can't see the results of a traceroute from your PC (or the PC's or the gateway's IPv6 config/status), I am not going to attempt to make any guesses, except to ask if possibly you are running the TC8305c in bridge mode (since I can't see your PC's IPv6 address, I have no way of knowing if it got it from your local TC8305C router, or directly from Comcast's DHCP server)
All I can suggest is that if you start to notice any significant problems now that IPv6 has been activated in your gateway, you can either disable IPv6 in attached devices or look for a way to disable it in the gateway (normally disabling IPv6 in a router is easy, but Comcast likes to make things difficult or impossible for users of their leased gateway boxes).