Re: Implicit MX and A RRs

--On Thursday, 27 March, 2008 09:00 +0200 Matti Aarnio
<mea@nic.funet.fi> wrote:

> 
> On Wed, Mar 26, 2008 at 10:46:37AM -0400, Tony Hansen wrote:
>> > <Mark_Andrews@isc.org> 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.

That is approximately what it says (in 2821bis) now.  It was
saying that which touched off the thread of which this one is a
descendant.

   john

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