[pdf] Sky UK on their IPv6/IPv4 gateways
A presentation from RIPE89 detailing Sky’s MAP-T setup, “IPv6-only with IPv4aaS (MAP-T)”. Basically they now use MAP-T translation devices to provide “IPv4 as a service”, transparent NAT mapping between IPv6 and IPv4. I suspect this is similar to how Virgin Media operates their network, too, in Ireland. Interestingly, there are now network features (like local CDN POPs) which are more performant when using IPv6 natively, as they avoid a “trombone” route via a network-border translation device to get an IPv4 address. As a result, it’s actually starting to be worthwhile running an IPv6 home network….
(tags: ipv4 ipv6 networking home sky isps ripe map-t nat ip)