Resolving forum.xda-developers.com send daemon into some kind of loop
This repeats over and over and over, and it can even be reproduced after a fresh restart:
[z-cut] zone cut set 'xda-developers.com.' ns 'ns2.xda-developers.com.'
[qiter] query 'forum.xda-developers.com. A' zone cut 'xda-developers.com.' nameserver 'ns2.xda-developers.com.'
[cache] read 'xda-developers.com. NS' => 3 RRs
[cache] del 'xda-developers.com. NS'
[cache] read 'com. NS' => 13 RRs
[z-cut] zone cut set 'com.' ns 'a.gtld-servers.net.'
[cache] read 'a.gtld-servers.net. A' => 1 RRs
[qiter] query 'xda-developers.com. NS' zone cut 'com.' nameserver 'a.gtld-servers.net.'
[cache] read 'ns2.xda-developers.com. A' => 1 RRs
[cache] read 'ns1.xda-developers.com. A' => 1 RRs
[cache] read 'ns3.xda-developers.com. A' => 1 RRs
[cache] write 'xda-developers.com. NS' => 3 RRs (key=22B,data=98B)
[z-cut] zone cut set 'xda-developers.com.' ns 'ns2.xda-developers.com.'
[qiter] query 'forum.xda-developers.com. A' zone cut 'xda-developers.com.' nameserver 'ns2.xda-developers.com.'
[cache] read 'xda-developers.com. NS' => 3 RRs
[cache] del 'xda-developers.com. NS'
[cache] read 'com. NS' => 13 RRs
[z-cut] zone cut set 'com.' ns 'a.gtld-servers.net.'
[cache] read 'a.gtld-servers.net. A' => 1 RRs
[qiter] query 'xda-developers.com. NS' zone cut 'com.' nameserver 'a.gtld-servers.net.'
[cache] read 'ns2.xda-developers.com. A' => 1 RRs
[cache] read 'ns1.xda-developers.com. A' => 1 RRs
[cache] read 'ns3.xda-developers.com. A' => 1 RRs
[cache] write 'xda-developers.com. NS' => 3 RRs (key=22B,data=98B)
[z-cut] zone cut set 'xda-developers.com.' ns 'ns2.xda-developers.com.'
[qiter] query 'forum.xda-developers.com. A' zone cut 'xda-developers.com.' nameserver 'ns2.xda-developers.com.'
[cache] read 'xda-developers.com. NS' => 3 RRs
[cache] del 'xda-developers.com. NS'
[cache] read 'com. NS' => 13 RRs
[z-cut] zone cut set 'com.' ns 'a.gtld-servers.net.'
[cache] read 'a.gtld-servers.net. A' => 1 RRs
[qiter] query 'xda-developers.com. NS' zone cut 'com.' nameserver 'a.gtld-servers.net.'
[cache] read 'ns2.xda-developers.com. A' => 1 RRs
[cache] read 'ns1.xda-developers.com. A' => 1 RRs
[cache] read 'ns3.xda-developers.com. A' => 1 RRs
[cache] write 'xda-developers.com. NS' => 3 RRs (key=22B,data=98B)
[z-cut] zone cut set 'xda-developers.com.' ns 'ns2.xda-developers.com.'
[reslv] iteration limit 50 reached => SERVFAIL
[stats] result => SERVFAIL [0 records]
[stats] rtt => 0.00 [ms]
[cache] read 'com. NS' => 13 RRs
[z-cut] zone cut set 'com.' ns 'a.gtld-servers.net.'
[cache] read 'a.gtld-servers.net. A' => 1 RRs
[rplan] plan 'forum.xda-developers.com.' type 'AAAA'
[qiter] query 'xda-developers.com. NS' zone cut 'com.' nameserver 'a.gtld-servers.net.'
[cache] write 'ns2.xda-developers.com. A' => 1 RRs (key=26B,data=18B)
[cache] write 'ns1.xda-developers.com. A' => 1 RRs (key=26B,data=18B)
[cache] write 'ns3.xda-developers.com. A' => 1 RRs (key=26B,data=18B)
[cache] write 'xda-developers.com. NS' => 3 RRs (key=22B,data=98B)
[z-cut] zone cut set 'xda-developers.com.' ns 'ns2.xda-developers.com.'
[qiter] query 'forum.xda-developers.com. AAAA' zone cut 'xda-developers.com.' nameserver 'ns2.xda-developers.com.'