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Date:      Fri, 16 Jul 2021 10:16:40 +1000
From:      Dewayne Geraghty <dewayne@heuristicsystems.com.au>
To:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   Is dnssec subject to intermittent failures?
Message-ID:  <9c03e923-5794-3bd2-5b27-b18592b95fd7@heuristicsystems.com.au>

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A few weeks ago I modified my named.conf to include
dnssec-validation auto;
after some testing we inserted into production.

Today my named refused to resolve with these messages:

In lame-servers.log (hundreds of these)
16-Jul-2021 06:04:47.412 broken trust chain resolving
'googlemail.l.google.com/A/IN'

and a little later in default.log
16-Jul-2021 06:17:09.018 client @0x2e3be400 127.0.5.91#47479
(freebsd.org.lookup.dkimwl.org): query failed (broken trust chain) for
freebsd.org.lookup.dkimwl.org/IN/A at query.c:6818
16-Jul-2021 06:19:00.604 client @0x2c66fc00 127.0.5.91#8845
(googlemail.com): query failed (broken trust chain) for
googlemail.com/IN/A at query.c:6818

After commenting out the validation line and HUPing named, it functioned
correctly.  I repeated by reapplying dnssec-validation and again refused
to resolve.

Is something in dnssec misbehaving of am I just being lucky?

Regards, Dewayne.



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