Resolving darujspravne.cz
I cannot resolve darujspravne.cz with knot-resolver. One of their DNS servers (ns3.jetcloud.biz) returns wrong answer which causes no answer from knot-resolver.
Bind and unbound can handle this situation.
Request:
dig darujspravne.cz A @*******************
; <<>> DiG 9.10.3-P4-Ubuntu <<>> darujspravne.cz A @*******************
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 19104
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;darujspravne.cz. IN A
;; Query time: 16 msec
;; SERVER: *******************
;; WHEN: Wed Apr 27 10:11:39 CEST 2016
;; MSG SIZE rcvd: 44
Knot-resolver log:
Apr 27 10:11:39 kres kresd[1403]: [plan] plan 'darujspravne.cz.' type 'A'
Apr 27 10:11:39 kres kresd[1403]: [resl] => NS is provably without DS, going insecure
Apr 27 10:11:39 kres kresd[1403]: [resl] => querying: '46.101.203.125' score: 11 zone cut: 'darujspravne.cz.' m12n: 'DAruJsPrAvNE.cZ.' type: 'A'
Apr 27 10:11:39 kres kresd[1403]: [iter] <= rcode: REFUSED
Apr 27 10:11:39 kres kresd[1403]: [resl] <= server: '46.101.203.125' rtt: 14 ms
Apr 27 10:11:39 kres kresd[1403]: [resl] finished: 4, queries: 1, mempool: 65600 B