Hello,
On 13 Apr 2017, at 11:53, Lanlan Pan wrote:
Hi Peter,
one question, will authoritative server return multiple ANAME RRs for
the
same domain at one dns query ?
for example,
www.example.com ANAME us.www.example.com
www.example.com ANAME cn.www.example.com
or return only one selected ANAME RR for one domain ? (based on
authoritative's policy, resolver ip/client subnet/...)
www.example.com ANAME us.www.example.com
Currently the draft explicitly states ‘No more than one ANAME resource
record SHALL be present at any DNS node.’, but we have received
multiple requests to relax this requirements, and will consider that.
That said, nothing prevents your own implementation from choosing the
target based on any kind of local policy. So if you want to pick US or
CN based on client IP, you can do that.
Kind regards,
--
Peter van Dijk
PowerDNS.COM BV - https://www.powerdns.com/
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