Quoting Joachim Fahrner (jf@???):

> There are no errors in the unbound log. And I'm wondering why these
> timeouts are only with dyne.org. I never had such failures with
> other domains since years. Maybe there is a problem in my providers
> network, but then that should happen with ANY domain, not only
> dyne.org.

Yes, that's a puzzle.

Just to give you an additional data point, I ran 10 iterations against
each of the three authoritative nameservers directly from
linuxmafia.com's command line, and got no timeouts.


[rick@linuxmafia]
~ $ /tmp/do
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
2017062500 on ns.dyne.org.
2017062500 on ns2.dyne.org.
2017062500 on ns3.dyne.org.
[rick@linuxmafia]
~ $ cat /tmp/do
#!/bin/sh
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
sleep 5
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
sleep 5
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
sleep 5
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
sleep 5
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
sleep 5
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
sleep 5
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
sleep 5
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
sleep 5
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
sleep 5
dig -t soa dyne.org. @ns.dyne.org. +short | awk '{ print $3 " on ns.dyne.org." }'
dig -t soa dyne.org. @ns2.dyne.org. +short | awk '{ print $3 " on ns2.dyne.org." }'
dig -t soa dyne.org. @ns3.dyne.org. +short | awk '{ print $3 " on ns3.dyne.org." }'
[rick@linuxmafia]
~ $