Hello,
We’re looking to replace our “home-grown” DNS resolver with libunbound,
and I’m seeing an issue that concerns me.
When I query on [myaddon1.cpanelssltest.org/A], libunbound gives me a
quick response.
But if I query on [cpanelssltest.org/NS], then from the same context
query [myaddon1.cpanelssltest.org/A], libunbound hangs. An strace shows that
it’s sending queries to two unresponsive DNS servers (ns1.cpanel.net and
ns2.cpanel.net) back and forth.
Eventually all of this does time out. But it takes several minutes. Is
there a control in libunbound’s configuration that would mitigate the long
delay?
I realize the DNS configuration is invalid, but because they’re under
users’ control, DNS misconfigurations are a fact of life for us. A delay of
several minutes could cause significant issues for us.
Any insight or tips would be welcome. Thank you in advance!
cheers,
-Felipe Gasper
Mississauga, Ontario
