Re: [sipcore] draft-ietf-sipcore-dns-dual-stack: Simon Perreault's review

[[e-mail] (Dale R. Worley)]

"Olle E. Johansson" <[e-mail]> writes:
>> At this point, the relationship between this draft and Happy Eyeballs is
>> not clear to me.

> This draft was meant to only clear up DNS lookups to prepare for another
> draft that discusses Happy Eyeballs in SIP. But that one could not be done
> if we did not have both A and AAAA records at the same time.

If I understand you correctly:

The scope of this draft is quite narrow.  It is to update these two
passages of RFC 3263:

   4.2 Determining Port and IP Address

   [a host name with a port number:]
   If the TARGET was not a numeric IP address, but a port is present in
   the URI, the client performs an A or AAAA record lookup of the domain
   name.

   [...]

   [a host name without a port number, but no SRV records for the host name:]
   If no SRV records were found, the client performs an A or AAAA record
   lookup of the domain name.  The result will be a list of IP
   addresses, each of which can be contacted using the transport
   protocol determined previously, at the default port for that
   transport.  Processing then proceeds as described above for an
   explicit port once the A or AAAA records have been looked up.

to align with this passage of RFC 2782 (SRV records):

   Note that where this document refers to "address records", it means A
   RR's, AAAA RR's, or their most modern equivalent.

Is that correct?

Dale