I'm seeing a "6to4" in the first hop when I try to tracert Facebook's IPv6 IP. It looks like Comcast has me covered until I can get an IPv6 router and modem. I

I'm seeing a "6to4" in the first hop when I try to tracert Facebook's IPv6 IP. It looks like Comcast has me covered until I can get an IPv6 router and modem. I also saw a dead:beef.