Resolution of `*.cloudfiles.rackspacecloud.com. IN A` fails with SERVFAIL
>> c0388858.cdn2.cloudfiles.rackspacecloud.com. IN A <<
> knot | bind:
rcode: 2 | 0
> differ: Count of responses.
;ANSWER [1]
ANSWER [2]
a1383.dscg10.akamai.net. IN A 2.21.74.33
a1383.dscg10.akamai.net. IN A 2.21.74.51
-------------^ knot | bind ^------------------
>> c0388858.cdn2.cloudfiles.rackspacecloud.com. IN A <<
> knot | unbound:
rcode: 2 | 0
> differ: Count of responses.
;ANSWER [1]
ANSWER [2]
a1383.dscg10.akamai.net. IN A 2.21.74.33
a1383.dscg10.akamai.net. IN A 2.21.74.51
-------------^ knot | unbound ^------------------
;; ->>HEADER<<- opcode: QUERY; status: SERVFAIL; id: 25787
;; Flags: qr rd ra; QUERY: 1; ANSWER: 0; AUTHORITY: 0; ADDITIONAL: 1
;; EDNS PSEUDOSECTION:
;; Version: 0; flags: do; UDP size: 4096 B; ext-rcode: Unused
;; QUESTION SECTION:
;; c0388858.cdn2.cloudfiles.rackspacecloud.com. IN A
;; Received 72 B
;; Time 2017-01-24 13:48:24 CET
;; From ::1@38267(UDP) in 1719.0 ms
clear cache log:
[ 0][plan] plan 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A'
[56954][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[56954][resl] => using root hints
[44674][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[44674][plan] plan '.' type 'DNSKEY'
[30973][iter] '.' type 'DNSKEY' id was assigned, parent id 44674
[30973][resl] => querying: '2001:dc3::35' score: 10 zone cut: '.' m12n: '.' type: 'DNSKEY' proto: 'udp'
[30973][iter] <= rcode: NOERROR
[30973][vldr] <= parent: updating DNSKEY
[30973][vldr] <= answer valid, OK
[30973][resl] <= server: '2001:dc3::35' rtt: 18 ms
[29982][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[29982][resl] => querying: '2001:500:9f::42' score: 10 zone cut: '.' m12n: 'cOm.' type: 'NS' proto: 'udp'
[29982][iter] <= using glue for 'a.gtld-servers.net.': '192.5.6.30'
[29982][iter] <= using glue for 'a.gtld-servers.net.': '2001:503:a83e::2:30'
[29982][iter] <= using glue for 'b.gtld-servers.net.': '192.33.14.30'
[29982][iter] <= using glue for 'b.gtld-servers.net.': '2001:503:231d::2:30'
[29982][iter] <= using glue for 'c.gtld-servers.net.': '192.26.92.30'
[29982][iter] <= using glue for 'd.gtld-servers.net.': '192.31.80.30'
[29982][iter] <= using glue for 'e.gtld-servers.net.': '192.12.94.30'
[29982][iter] <= using glue for 'f.gtld-servers.net.': '192.35.51.30'
[29982][iter] <= using glue for 'g.gtld-servers.net.': '192.42.93.30'
[29982][iter] <= using glue for 'h.gtld-servers.net.': '192.54.112.30'
[29982][iter] <= using glue for 'i.gtld-servers.net.': '192.43.172.30'
[29982][iter] <= using glue for 'j.gtld-servers.net.': '192.48.79.30'
[29982][iter] <= using glue for 'k.gtld-servers.net.': '192.52.178.30'
[29982][iter] <= using glue for 'l.gtld-servers.net.': '192.41.162.30'
[29982][iter] <= using glue for 'm.gtld-servers.net.': '192.55.83.30'
[29982][iter] <= referral response, follow
[29982][vldr] <= DS: OK
[29982][vldr] <= answer valid, OK
[29982][resl] <= server: '2001:500:9f::42' rtt: 1 ms
[22599][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[22599][plan] plan 'com.' type 'DNSKEY'
[ 9678][iter] 'com.' type 'DNSKEY' id was assigned, parent id 22599
[ 9678][resl] => querying: '192.55.83.30' score: 10 zone cut: 'com.' m12n: 'COm.' type: 'DNSKEY' proto: 'udp'
[ 9678][iter] <= rcode: NOERROR
[ 9678][vldr] <= parent: updating DNSKEY
[ 9678][vldr] <= answer valid, OK
[ 9678][resl] <= server: '192.55.83.30' rtt: 34 ms
[49039][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[49039][resl] => querying: '192.41.162.30' score: 10 zone cut: 'com.' m12n: 'rACkSPACecLouD.cOM.' type: 'NS' proto: 'udp'
[49039][iter] <= using glue for 'ns2.rackspace.com.': '65.61.188.4'
[49039][iter] <= using glue for 'ns.rackspace.com.': '69.20.95.4'
[49039][iter] <= referral response, follow
[49039][vldr] <= DS doesn't exist, going insecure
[49039][vldr] <= answer valid, OK
[49039][resl] <= server: '192.41.162.30' rtt: 115 ms
[51213][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[51213][resl] => querying: '65.61.188.4' score: 10 zone cut: 'rackspacecloud.com.' m12n: 'CLoUDFIleS.RacKsPAcECloUD.cOM.' type: 'NS' proto: 'udp'
[51213][iter] <= referral response, follow
[51213][resl] <= server: '65.61.188.4' rtt: 31 ms
[33844][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[33844][plan] plan 'www-gtm-ord1.rackspace.com.' type 'AAAA'
[62064][iter] 'www-gtm-ord1.rackspace.com.' type 'AAAA' id was assigned, parent id 33844
[58017][iter] 'www-gtm-ord1.rackspace.com.' type 'AAAA' id was assigned, parent id 33844
[58017][plan] plan 'm.gtld-servers.net.' type 'AAAA'
[45856][iter] 'm.gtld-servers.net.' type 'AAAA' id was assigned, parent id 58017
[45856][resl] => using root hints
[ 4235][iter] 'm.gtld-servers.net.' type 'AAAA' id was assigned, parent id 58017
[ 4235][resl] >< TA: '.'
[ 4235][plan] plan '.' type 'DNSKEY'
[33383][iter] '.' type 'DNSKEY' id was assigned, parent id 4235
[33383][ rc ] => satisfied from cache
[33383][iter] <= rcode: NOERROR
[33383][vldr] <= parent: updating DNSKEY
[33383][vldr] <= answer valid, OK
[53600][iter] 'm.gtld-servers.net.' type 'AAAA' id was assigned, parent id 58017
[53600][resl] => querying: '2001:7fd::1' score: 10 zone cut: '.' m12n: 'NeT.' type: 'NS' proto: 'udp'
[53600][iter] <= using glue for 'a.gtld-servers.net.': '192.5.6.30'
[53600][iter] <= using glue for 'a.gtld-servers.net.': '2001:503:a83e::2:30'
[53600][iter] <= using glue for 'b.gtld-servers.net.': '192.33.14.30'
[53600][iter] <= using glue for 'b.gtld-servers.net.': '2001:503:231d::2:30'
[53600][iter] <= using glue for 'c.gtld-servers.net.': '192.26.92.30'
[53600][iter] <= using glue for 'd.gtld-servers.net.': '192.31.80.30'
[53600][iter] <= using glue for 'e.gtld-servers.net.': '192.12.94.30'
[53600][iter] <= using glue for 'f.gtld-servers.net.': '192.35.51.30'
[53600][iter] <= using glue for 'g.gtld-servers.net.': '192.42.93.30'
[53600][iter] <= using glue for 'h.gtld-servers.net.': '192.54.112.30'
[53600][iter] <= using glue for 'i.gtld-servers.net.': '192.43.172.30'
[53600][iter] <= using glue for 'j.gtld-servers.net.': '192.48.79.30'
[53600][iter] <= using glue for 'k.gtld-servers.net.': '192.52.178.30'
[53600][iter] <= using glue for 'l.gtld-servers.net.': '192.41.162.30'
[53600][iter] <= using glue for 'm.gtld-servers.net.': '192.55.83.30'
[53600][iter] <= referral response, follow
[53600][vldr] <= DS: OK
[53600][vldr] <= answer valid, OK
[53600][resl] <= server: '2001:7fd::1' rtt: 5 ms
[63179][iter] 'm.gtld-servers.net.' type 'AAAA' id was assigned, parent id 58017
[63179][plan] plan 'net.' type 'DNSKEY'
[64080][iter] 'net.' type 'DNSKEY' id was assigned, parent id 63179
[64080][resl] => querying: '192.52.178.30' score: 10 zone cut: 'net.' m12n: 'neT.' type: 'DNSKEY' proto: 'udp'
[64080][resl] => querying: '192.48.79.30' score: 10 zone cut: 'net.' m12n: 'neT.' type: 'DNSKEY' proto: 'udp'
[64080][iter] <= rcode: NOERROR
[64080][vldr] <= parent: updating DNSKEY
[64080][vldr] <= answer valid, OK
[64080][resl] <= server: '192.52.178.30' rtt: 264 ms
[64080][resl] <= server: '192.48.79.30' rtt: >=14 ms
[43576][iter] 'm.gtld-servers.net.' type 'AAAA' id was assigned, parent id 58017
[43576][resl] => querying: '192.43.172.30' score: 10 zone cut: 'net.' m12n: 'gtld-seRVeRs.NeT.' type: 'NS' proto: 'udp'
[43576][iter] <= referral response, follow
[43576][vldr] <= DS doesn't exist, going insecure
[43576][vldr] <= parent: updating DS
[43576][vldr] <= answer valid, OK
[43576][resl] <= server: '192.43.172.30' rtt: 28 ms
[27496][iter] 'm.gtld-servers.net.' type 'AAAA' id was assigned, parent id 58017
[27496][plan] plan 'av4.nstld.com.' type 'AAAA'
[27534][iter] 'av4.nstld.com.' type 'AAAA' id was assigned, parent id 27496
[22969][iter] 'av4.nstld.com.' type 'AAAA' id was assigned, parent id 27496
[22969][resl] => querying: '192.54.112.30' score: 10 zone cut: 'com.' m12n: 'nsTLd.COm.' type: 'NS' proto: 'udp'
[22969][iter] <= using glue for 'av1.nstld.com.': '192.42.177.30'
[22969][iter] <= using glue for 'av1.nstld.com.': '2001:500:124::30'
[22969][iter] <= using glue for 'av2.nstld.com.': '192.42.178.30'
[22969][iter] <= using glue for 'av2.nstld.com.': '2001:500:125::30'
[22969][iter] <= using glue for 'av3.nstld.com.': '192.82.133.30'
[22969][iter] <= using glue for 'av3.nstld.com.': '2001:500:126::30'
[22969][iter] <= using glue for 'av4.nstld.com.': '192.82.134.30'
[22969][iter] <= using glue for 'av4.nstld.com.': '2001:500:127::30'
[22969][iter] <= referral response, follow
[22969][resl] <= server: '192.54.112.30' rtt: 28 ms
[10652][iter] 'av4.nstld.com.' type 'AAAA' id was assigned, parent id 27496
[10652][resl] => querying: '2001:500:127::30' score: 10 zone cut: 'nstld.com.' m12n: 'aV4.nSTLd.cOM.' type: 'AAAA' proto: 'udp'
[10652][iter] <= using glue for 'av3.nstld.com.': '192.82.133.30'
[10652][iter] <= using glue for 'av3.nstld.com.': '2001:500:126::30'
[10652][iter] <= using glue for 'av1.nstld.com.': '192.42.177.30'
[10652][iter] <= using glue for 'av1.nstld.com.': '2001:500:124::30'
[10652][iter] <= using glue for 'av4.nstld.com.': '2001:500:127::30'
[10652][iter] <= using glue for 'av4.nstld.com.': '192.82.134.30'
[10652][iter] <= using glue for 'av2.nstld.com.': '192.42.178.30'
[10652][iter] <= using glue for 'av2.nstld.com.': '2001:500:125::30'
[10652][iter] <= rcode: NOERROR
[10652][resl] <= server: '2001:500:127::30' rtt: 19 ms
[61253][iter] 'm.gtld-servers.net.' type 'AAAA' id was assigned, parent id 58017
[61253][resl] => querying: '2001:500:127::30' score: 19 zone cut: 'gtld-servers.net.' m12n: 'M.gTld-SERVerS.NEt.' type: 'AAAA' proto: 'udp'
[61253][iter] <= rcode: NOERROR
[61253][ pc ] => answer cached for TTL=900
[61253][resl] <= server: '2001:500:127::30' rtt: 18 ms
[51040][iter] 'www-gtm-ord1.rackspace.com.' type 'AAAA' id was assigned, parent id 33844
[51040][plan] plan 'm.gtld-servers.net.' type 'A'
[26418][iter] 'm.gtld-servers.net.' type 'A' id was assigned, parent id 51040
[26418][ rc ] => satisfied from cache
[26418][iter] <= rcode: NOERROR
[26418][vldr] <= cached insecure response, going insecure
[12543][iter] 'www-gtm-ord1.rackspace.com.' type 'AAAA' id was assigned, parent id 33844
[12543][resl] => querying: '192.55.83.30' score: 34 zone cut: 'com.' m12n: 'racKSPaCe.COm.' type: 'NS' proto: 'udp'
[12543][iter] <= using glue for 'ns2.rackspace.com.': '65.61.188.4'
[12543][iter] <= using glue for 'ns.rackspace.com.': '69.20.95.4'
[12543][iter] <= referral response, follow
[12543][resl] <= server: '192.55.83.30' rtt: 34 ms
[60529][iter] 'www-gtm-ord1.rackspace.com.' type 'AAAA' id was assigned, parent id 33844
[60529][resl] => querying: '69.20.95.4' score: 10 zone cut: 'rackspace.com.' m12n: 'wWW-gTM-oRD1.raCksPAcE.CoM.' type: 'AAAA' proto: 'udp'
[60529][iter] <= rcode: NOERROR
[60529][ pc ] => answer cached for TTL=300
[60529][resl] <= server: '69.20.95.4' rtt: 107 ms
[56516][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[56516][plan] plan 'www-gtm-ord1.rackspace.com.' type 'A'
[ 4871][iter] 'www-gtm-ord1.rackspace.com.' type 'A' id was assigned, parent id 56516
[ 3085][iter] 'www-gtm-ord1.rackspace.com.' type 'A' id was assigned, parent id 56516
[ 3085][resl] => querying: '65.61.188.4' score: 31 zone cut: 'rackspace.com.' m12n: 'WWw-gtm-OrD1.RAckSPACE.CoM.' type: 'A' proto: 'udp'
[ 3085][iter] <= using glue for 'ns2.rackspace.com.': '65.61.188.4'
[ 3085][iter] <= using glue for 'ns.rackspace.com.': '69.20.95.4'
[ 3085][iter] <= rcode: NOERROR
[ 3085][resl] <= server: '65.61.188.4' rtt: 27 ms
[41180][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[41180][resl] => querying: '173.203.44.119' score: 10 zone cut: 'wip.rackspacecloud.com.' m12n: 'cdN2.CLoudfileS.rACkSPacECLoud.com.' type: 'NS' proto: 'udp'
[41180][iter] <= rcode: REFUSED
[41180][resl] <= server: '173.203.44.119' rtt: 121 ms
[52045][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[52045][resl] => querying: '173.203.44.119' score: 221 zone cut: 'wip.rackspacecloud.com.' m12n: 'c0388858.Cdn2.CLOuDfiLes.RacksPAceCloUd.COm.' type: 'A' proto: 'udp'
[52045][iter] <= rcode: REFUSED
[52045][resl] <= server: '173.203.44.119' rtt: 118 ms
[58945][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[58945][resl] => querying: '173.203.44.119' score: 269 zone cut: 'wip.rackspacecloud.com.' m12n: 'C0388858.cDn2.cLOudFIlEs.RAcKspACecLOUd.CoM.' type: 'A' proto: 'udp'
[58945][iter] <= rcode: REFUSED
[58945][resl] <= server: '173.203.44.119' rtt: 119 ms
[ 1543][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[ 1543][resl] => querying: '173.203.44.119' score: 294 zone cut: 'wip.rackspacecloud.com.' m12n: 'C0388858.CDN2.clOUDfiLeS.RAckSpaCeclOUd.COM.' type: 'A' proto: 'udp'
[ 1543][iter] <= rcode: REFUSED
[ 1543][resl] => server: '173.203.44.119' flagged as 'bad'
[34164][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[34164][resl] => unresolvable NS address, bailing out
[34164][plan] plan 'www-gtm-iad2.rackspace.com.' type 'AAAA'
[ 5083][iter] 'www-gtm-iad2.rackspace.com.' type 'AAAA' id was assigned, parent id 34164
[32261][iter] 'www-gtm-iad2.rackspace.com.' type 'AAAA' id was assigned, parent id 34164
[32261][resl] => querying: '65.61.188.4' score: 29 zone cut: 'rackspace.com.' m12n: 'wWw-Gtm-iaD2.RACksPAcE.COM.' type: 'AAAA' proto: 'udp'
[32261][iter] <= rcode: NOERROR
[32261][ pc ] => answer cached for TTL=300
[32261][resl] <= server: '65.61.188.4' rtt: 35 ms
[ 1144][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[ 1144][plan] plan 'www-gtm-iad2.rackspace.com.' type 'A'
[56948][iter] 'www-gtm-iad2.rackspace.com.' type 'A' id was assigned, parent id 1144
[ 4816][iter] 'www-gtm-iad2.rackspace.com.' type 'A' id was assigned, parent id 1144
[ 4816][resl] => querying: '65.61.188.4' score: 32 zone cut: 'rackspace.com.' m12n: 'WWw-GtM-iAD2.rACKSpACe.coM.' type: 'A' proto: 'udp'
[ 4816][iter] <= using glue for 'ns2.rackspace.com.': '65.61.188.4'
[ 4816][iter] <= using glue for 'ns.rackspace.com.': '69.20.95.4'
[ 4816][iter] <= rcode: NOERROR
[ 4816][resl] <= server: '65.61.188.4' rtt: 27 ms
[23391][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[23391][resl] => querying: '207.97.206.40' score: 10 zone cut: 'wip.rackspacecloud.com.' m12n: 'c0388858.Cdn2.clOUDfiLEs.racKspaceClOuD.COm.' type: 'A' proto: 'udp'
[23391][iter] <= rcode: REFUSED
[23391][resl] <= server: '207.97.206.40' rtt: 107 ms
[15551][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[15551][resl] => querying: '207.97.206.40' score: 207 zone cut: 'wip.rackspacecloud.com.' m12n: 'C0388858.cDn2.clouDfilES.RAcKSpACEcloUD.CoM.' type: 'A' proto: 'udp'
[15551][iter] <= rcode: REFUSED
[15551][resl] <= server: '207.97.206.40' rtt: 108 ms
[56069][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[56069][resl] => querying: '207.97.206.40' score: 257 zone cut: 'wip.rackspacecloud.com.' m12n: 'c0388858.CDN2.ClouDFiles.RaCkspAceCloud.cOM.' type: 'A' proto: 'udp'
[56069][iter] <= rcode: REFUSED
[56069][resl] <= server: '207.97.206.40' rtt: 111 ms
[62422][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[62422][resl] => querying: '207.97.206.40' score: 284 zone cut: 'wip.rackspacecloud.com.' m12n: 'C0388858.cDn2.ClOuDfIles.RaCkSpaCECLouD.CoM.' type: 'A' proto: 'udp'
[62422][iter] <= rcode: REFUSED
[62422][resl] => server: '207.97.206.40' flagged as 'bad'
[24149][iter] 'c0388858.cdn2.cloudfiles.rackspacecloud.com.' type 'A' id was assigned, parent id 0
[24149][resl] => unresolvable NS address, bailing out
[24149][resl] => no valid NS left
[ 0][resl] finished: 8, queries: 12, mempool: 164000 B