On 30 Mar 2010, at 19:25, Andrew Sullivan wrote:
it seems like the wrong time to break a perfectly good feature (DNS
answers on v4 for a possible v6 connection).
+1
It is a very, very bad idea to couple the network protocol to the
answers given by a DNS server. The end client may well have v6
connectivity (say) even if it has to use a v4-only resolving server or
middleware box. Even if there was a magic "I do/don't speak v6" flag
bit that the client could signal to the authoritative server, this is
still a bad idea. For example an application may be stuck on a v4 only
box but is trying to survey how much v6 is in the DNS by asking for
AAAA records at interesting domain names.
Let's wait now until Yahoo's idea makes its way to the WG.
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