On Wed, Mar 26, 2008 at 10:46:37AM -0400, Tony Hansen wrote:
It would be needed until IPv6 takes over.
It will be needed even *after* IPv6 takes over. There will
be lots of queries for A records long after the majority
of hosts don't have A records.
We need to remove the implict MX from A to prevent the A
record lookups occuring as things currently stand.
There will be lots of legacy codes using legacy APIs for long future.
I do use getaddrinfo() API myself, and permit it do all queries to
get addresses. Thus it will also query for A in addition to AAAA.
It can even be ordered to ignore IPv4 or IPv6 as sysadmin wants.
For the future the previous "query for A record" should possibly
be altered to "query for network address (IPv6 AAAA and/or IPv4 A)"
or some such generic wording.
/Matti Aarnio <mea(_at_)nic(_dot_)funet(_dot_)fi>