> I have seen this happen when bind for some reason (eg mtu issues with
> vpn) cannot query for the DLV key at dlv.isc.org. I have not figured
> out the exact failure mode there. Check the logs to see errors for DNSKEY
> queries for dlv.isc.org to see if this is happening here too. However in
> that case, no queries at all make it.
Hmm, I wonder whether it could be related to my tunnelled IPv6
connectivity. I still don't see why, though.
Resolution definitely works sometimes. When it starts failing
'rndc flush' has fixed it for me.
-roy
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