IPv6 support on Virgin media

@Ignition:  A few related points:

• Liberty Global running DS-Lite in all of their countries but something different in UK seems extremely unlikely.

• How IPv4 is provisioned within a native IPv6 deployment doesn't affect the IPv6 numbers that we're seeing.

• I think it's a reasonable guess that Liberty Global / Virgin beancounters will be going for the least costly option.

• DS-Lite provides the cost and support benefits of IPv6-only internal infrastructure, plus IPv4-As-A-Service later.

• Deploying DS-Lite now would allow them to profit from their excess IPv4 addresses before world prices tumble.

Given the above, I don't expect Liberty Global's IPv6 deployment in UK to be any different than elsewhere.