Return two locations or low TTL [was: DNS caches that support partitioning ?]

Patrick W. Gilmore patrick at
Mon Aug 20 13:18:01 UTC 2012

On Aug 20, 2012, at 08:47 , Chris Adams <cmadams at> wrote:
> Once upon a time, Patrick W. Gilmore <patrick at> said:

>> * How many applications are even aware multiple addresses were returned?
> Most anything that supports IPv6 should handle this correctly, since
> getaddrinfo() will return a list of addresses to try.

Ah, the amazing new call which destroys any possibility of randomness or round robin or other ways of load balancing between A / AAAA records.

Yes, all of us returning more than one A / AAAA record are hoping that gets widely deployed instantly.  Or not.


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