Good thought but no luck, it doesn’t matter how many times I run “dig txt 
rs.dns-oarc.net” or how long I wait it continues to SERVFAIL until I run "dig 
txt rs.dns-oarc.net +trace" Interestingly I've found that running "dig txt 
dns-oarc.net +trace" isn't enough to fix it, I actually have to run "dig txt 
rs.dns-oarc.net +trace" before things start working.

[...]

There's an insecure delegation (NS set, and NSEC proving the nonexistence of a 
DS set) from dns-oarc.net to rs.dns-oarc.net.  However, there's disagreement 
between the parent and child about what name servers actually serve 
rs.dns-oarc.net, and at least some of them are refusing to answer TCP.  It's 
likely your recursive server is, for whatever reason, being drawn to the ones 
failing to respond, and not getting good data elsewhere fast enough to answer 
your query.

[...]

I agree, from my limited understanding this seems to describe what is happening 
well. The thing I'm wondering is why? I'm running older visions of named 
(9.9.4, yum provided RPM on CentOS 6) that seem immune to this issue. I've been 
digging through release notes and can't find any setting that has changed 
between the versions that might explain it (I know 9.9.4 to 9.12 is a big jump, 
so I'm sure I'm missing something)

Thank you!

-Nick

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