Comcast had real incentive to push IPv6 hard in some markets -- their address plane was out of addresses to satisfy DHCP leases in some markets. When you get s

Comcast had real incentive to push IPv6 hard in some markets -- their address plane was out of addresses to satisfy DHCP leases in some markets. When you get support calls in a market, and the reason is because they can't be given an IP address, it lights a fire under you. Needless to say, I've had IPv6 with spot-on 6-to-4 support in Boston for over a year now.