[11:40] <stgraber> cjwatson: now that we have ipv6.archive.ubuntu.com, do you think it'd make sense to add some logic in choose-mirror to detect an IPv6 only network and if its default mirror isn't IPv6, then fallback to ipv6.archive.ubuntu.com?
[11:41] <stgraber> cjwatson: basically changing the fallback in choose_mirror when we don't have IPv4 connectivity and also change mirrors_in to only return reachable mirrors (would need to use getaddrinfo there, so would cause a few DNS queries)
[11:48] <cjwatson> stgraber: yes
[11:48] <cjwatson> stgraber: ideally there'd be some way to represent this in the mirror structures though
[11:48] <cjwatson> stgraber: I think the masterlist format already has an IPv6 field, so maybe extend the Ubuntu masterlist and extend our code to deal with that a bit
[11:52] <stgraber> indeed, having that information in the list would make a lot of sense, then we just need to have netcfg set a debconf key telling choose-mirror what to show either ipv4 only, ipv6 only or both (I don't think we have countries with IPv6 only mirrors, but that may come soon)