On Thu Apr 14 19:37:34 2011, Peter Saint-Andre wrote:
I don't know that this is "broken" so much as "liberal in what you
accept". RFC 3920 was ambiguous on whether to fall back to A/AAAA
lookups if SRV failed, but leaned toward doing fallback even if SRV
failed. RFC 6120 is more strict in this regard.
Oh, falling back to A/AAAA will also work, as it happens:
dave.cridland.net. 86400 IN A 217.155.137.61
dave.cridland.net. 86400 IN AAAA
2001:470:1f09:882:2e0:81ff:fe29:d16a
But the issue is that the highest priority SRV record doesn't have an
A record, whereas the second does.
So an IPv4-only server is forced to give up on the highest priority
record and move to the next priority slot.
Dave.
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