On 04/11/2018 08:05, Ray Bellis wrote:

AFAIK, BIND does not currently do this.  That said, MarkA has a patch that supports it, so we do know it's possible.

Correction - BIND *does* do this, but only for address records that are already in the cache. If the AAAA for the target is in the cache, but the A record isn't, that's all you'll get.

Mark's patch forces BIND to pre-fill the cache with the A and AAAA records for the SRV target before replying.


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