[dns-operations] RRL exposed: resolver issues with AAAA-only NS?
matt at conundrum.com
Fri Jan 11 16:57:07 UTC 2013
On 2013/01/10, at 16:53, Phil Pennock wrote:
> Anyone know of any resolvers that suffer horribly and die when presented
> with an NS host which is AAAA-only?
From the perspective of a v4-only resolver, that would look like a lame delegation. Is the whole NS set v6-only, or just the one name server? If it's the whole NS set it wouldn't surprise me to find a few implementations that become a bit pathological about trying to get the address records. I'd expect those implementations to try resolving the whole NS set though, and give up once they found a v4 address for any of them.
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