Strange issue - not sure how to fix
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Open that up in wireshark and you can see way more info on what is being asked, what is being returned... See my edit above post.
But for example, you see that query to 192.33.4.12 that is one of the root servers.
;; QUESTION SECTION: ;12.4.33.192.in-addr.arpa. IN PTR ;; ANSWER SECTION: 12.4.33.192.in-addr.arpa. 10800 IN PTR c.root-servers.net. -
@johnpoz
So that would suggest that things are working right now? Which is good. I will repeat this traffic capture once things go south again.I have installed Wireshark, but am not sure how to get my traffic into it from the text file I have. Any pointers there?
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Not the text that is shown, the download button.
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Great - got it. Now how do I edit out my ip address prior to posting the output? There does not seem to be any replace function in the UI that I can see.
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@pfguy2018
NVM - figured that out
Here is some of the output from the capture I posted above
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It's a little hard to read the image, but there do appear to be successful queries to the root servers, as expected. So I will repeat this capture once the domain question stops resolving, to see if there are any differences in the traffic.
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Exactly the big question is are you actually sending the queries and just not getting an answer.. Or are you not sending them at all..
If it was just something hung up in unbound, you would think a restart of it would fix it... But your having to reboot... Which makes less sense unless its something with the actual wan connection.
You should always know the IPs of the roots, because you don't have to query for them - its in the hints file.. So you should always be able to query for IP of a root server even if no wan connectivity..
[2.4.4-RELEASE][admin@sg4860.local.lan]/root: dig h.root-servers.net ; <<>> DiG 9.12.2-P1 <<>> h.root-servers.net ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 34795 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;h.root-servers.net. IN A ;; ANSWER SECTION: h.root-servers.net. 25823 IN A 198.97.190.53 ;; Query time: 0 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Sun Feb 23 09:30:53 CST 2020 ;; MSG SIZE rcvd: 63You should be able to ask unbound this way as well how it would look up NS for a tld... When it fails again.. I would check this as well to see what the output is..
[2.4.4-RELEASE][admin@sg4860.local.lan]/root: unbound-control -c /var/unbound/unbound.conf lookup com The following name servers are used for lookup of com. ;rrset 80980 13 0 2 0 com. 80980 IN NS b.gtld-servers.net. com. 80980 IN NS e.gtld-servers.net. com. 80980 IN NS c.gtld-servers.net. com. 80980 IN NS h.gtld-servers.net. com. 80980 IN NS l.gtld-servers.net. com. 80980 IN NS a.gtld-servers.net. com. 80980 IN NS k.gtld-servers.net. com. 80980 IN NS g.gtld-servers.net. com. 80980 IN NS i.gtld-servers.net. com. 80980 IN NS f.gtld-servers.net. com. 80980 IN NS d.gtld-servers.net. com. 80980 IN NS j.gtld-servers.net. com. 80980 IN NS m.gtld-servers.net. ;rrset 80980 1 1 11 5 com. 80980 IN DS 30909 8 2 E2D3C916F6DEEAC73294E8268FB5885044A833FC5459588F4A9184CFC41A5766 com. 80980 IN RRSIG DS 8 1 86400 20200307050000 20200223040000 33853 . sLV0mt5DtczNJfepnGzpEjM5Gctb51i5Spnjk63LfpKu0YiWw160w9zDis/RoclzEKIAQ1wSWJNo04uBOQg7VAQ646bPoEcvSQ2Y7GJap4FqVIdAS3o5pJhKKmqeSVJxQ/aaj1BQAaWEFaU9yIvtnNWL7Lg0wUakZ483FTUxknRzTVHEVhNhnLUdjUcxEId0wEmmrkfsc5yiqRV9fYcOXUEZwFrV8YaoOTKaXKeL69zA2S4CJyXqQMbzFndPEE3/FnIhk3F19JfLgya8kwKTKbX22JJImxbmXA4zMTI8efnhlJ/ZS5QuuPcY2P2r+qVITs2Ibv2gvVBCYJltNxxaEQ== ;{id = 33853} ;rrset 25739 1 0 8 3 m.gtld-servers.net. 25739 IN A 192.55.83.30 ;rrset 25739 1 0 8 3 m.gtld-servers.net. 25739 IN AAAA 2001:501:b1f9::30 ;rrset 25738 1 0 8 3 j.gtld-servers.net. 25738 IN A 192.48.79.30 ;rrset 25738 1 0 8 3 j.gtld-servers.net. 25738 IN AAAA 2001:502:7094::30 ;rrset 25737 1 0 8 3 d.gtld-servers.net. 25737 IN A 192.31.80.30 ;rrset 25737 1 0 8 3 d.gtld-servers.net. 25737 IN AAAA 2001:500:856e::30 ;rrset 25737 1 0 8 3 f.gtld-servers.net. 25737 IN A 192.35.51.30 ;rrset 25737 1 0 8 3 f.gtld-servers.net. 25737 IN AAAA 2001:503:d414::30 ;rrset 25738 1 0 8 3 i.gtld-servers.net. 25738 IN A 192.43.172.30 ;rrset 25738 1 0 8 3 i.gtld-servers.net. 25738 IN AAAA 2001:503:39c1::30 ;rrset 25738 1 0 8 3 g.gtld-servers.net. 25738 IN A 192.42.93.30 ;rrset 25738 1 0 8 3 g.gtld-servers.net. 25738 IN AAAA 2001:503:eea3::30 ;rrset 25738 1 0 8 3 k.gtld-servers.net. 25738 IN A 192.52.178.30 ;rrset 25738 1 0 8 3 k.gtld-servers.net. 25738 IN AAAA 2001:503:d2d::30 ;rrset 25737 1 0 8 3 a.gtld-servers.net. 25737 IN A 192.5.6.30 ;rrset 25737 1 0 8 3 a.gtld-servers.net. 25737 IN AAAA 2001:503:a83e::2:30 ;rrset 25738 1 0 8 3 l.gtld-servers.net. 25738 IN A 192.41.162.30 ;rrset 25739 1 0 8 3 l.gtld-servers.net. 25739 IN AAAA 2001:500:d937::30 ;rrset 25738 1 0 8 3 h.gtld-servers.net. 25738 IN A 192.54.112.30 ;rrset 25738 1 0 8 3 h.gtld-servers.net. 25738 IN AAAA 2001:502:8cc::30 ;rrset 25737 1 0 8 3 c.gtld-servers.net. 25737 IN A 192.26.92.30 ;rrset 25737 1 0 8 3 c.gtld-servers.net. 25737 IN AAAA 2001:503:83eb::30 ;rrset 25737 1 0 8 3 e.gtld-servers.net. 25737 IN A 192.12.94.30 ;rrset 25737 1 0 8 3 e.gtld-servers.net. 25737 IN AAAA 2001:502:1ca1::30 ;rrset 25737 1 0 8 3 b.gtld-servers.net. 25737 IN A 192.33.14.30 ;rrset 25737 1 0 8 3 b.gtld-servers.net. 25737 IN AAAA 2001:503:231d::2:30 Delegation with 13 names, of which 0 can be examined to query further addresses. It provides 26 IP addresses. 2001:503:231d::2:30 rto 376 msec, ttl 460, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.33.14.30 not in infra cache. 2001:502:1ca1::30 rto 376 msec, ttl 460, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.12.94.30 rto 191 msec, ttl 302, ping 15 var 44 rtt 191, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:83eb::30 rto 376 msec, ttl 171, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.26.92.30 rto 183 msec, ttl 302, ping 15 var 42 rtt 183, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:502:8cc::30 not in infra cache. 192.54.112.30 rto 243 msec, ttl 294, ping 3 var 60 rtt 243, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:500:d937::30 rto 376 msec, ttl 302, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.41.162.30 rto 285 msec, ttl 473, ping 17 var 67 rtt 285, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:a83e::2:30 rto 376 msec, ttl 460, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.5.6.30 rto 279 msec, ttl 733, ping 7 var 68 rtt 279, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:d2d::30 rto 376 msec, ttl 302, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.52.178.30 rto 317 msec, ttl 711, ping 13 var 76 rtt 317, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:eea3::30 rto 376 msec, ttl 460, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.42.93.30 rto 327 msec, ttl 91, ping 23 var 76 rtt 327, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:39c1::30 rto 376 msec, ttl 711, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.43.172.30 rto 214 msec, ttl 268, ping 6 var 52 rtt 214, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:d414::30 rto 376 msec, ttl 171, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.35.51.30 rto 365 msec, ttl 473, ping 9 var 89 rtt 365, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:500:856e::30 rto 376 msec, ttl 171, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.31.80.30 rto 238 msec, ttl 302, ping 10 var 57 rtt 238, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:502:7094::30 not in infra cache. 192.48.79.30 rto 302 msec, ttl 706, ping 2 var 75 rtt 302, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:501:b1f9::30 not in infra cache. 192.55.83.30 rto 351 msec, ttl 706, ping 7 var 86 rtt 351, tA 0, tAAAA 0, tother 0, EDNS 0 probed. [2.4.4-RELEASE][admin@sg4860.local.lan]/root:To validate it actually has IPs for roots.
[2.4.4-RELEASE][admin@sg4860.local.lan]/root: unbound-control -c /var/unbound/unbound.conf lookup . The following name servers are used for lookup of . ;rrset 80411 13 1 11 5 . 80411 IN NS k.root-servers.net. . 80411 IN NS b.root-servers.net. . 80411 IN NS m.root-servers.net. . 80411 IN NS c.root-servers.net. . 80411 IN NS d.root-servers.net. . 80411 IN NS l.root-servers.net. . 80411 IN NS h.root-servers.net. . 80411 IN NS j.root-servers.net. . 80411 IN NS g.root-servers.net. . 80411 IN NS e.root-servers.net. . 80411 IN NS f.root-servers.net. . 80411 IN NS a.root-servers.net. . 80411 IN NS i.root-servers.net. . 80411 IN RRSIG NS 8 0 518400 20200307050000 20200223040000 33853 . OywKX+NljD5Qsir5p4YY6Cz4raE6/1M5peyPyBymFCakHkG2tKG6u8k70cjNe/VAyYG0JPkqOFJ7I4+gzCqODab/8Vc18hClQ3XO6yj5IsdWcl5w+GgI7DFO5Tk7Bhx/5HqCNEXrmiCr8u1qvry0cdgmOO8iYvMDSXnT4FlGt49DIr4msrRU6Fsr0yjamoBVdcEaQwU9KDptzbMDnqJVL2FYGnpftrVanszm6Vs8q2iZivNlmTL1b2QKFidqI8DLs6V2yIPMbCOHFdAwlfw6LpWUaQhUxmxdsfBn28QUonZTUz/BOWpzWRmXDb2TDo1ofUkoOLvj7pHJvC7JEt07Zg== ;{id = 33853} ;rrset 25166 1 0 8 3 i.root-servers.net. 25166 IN A 192.36.148.17 ;rrset 25166 1 0 8 3 i.root-servers.net. 25166 IN AAAA 2001:7fe::53 ;rrset 25167 1 0 8 3 a.root-servers.net. 25167 IN A 198.41.0.4 ;rrset 25167 1 0 8 3 a.root-servers.net. 25167 IN AAAA 2001:503:ba3e::2:30 ;rrset 25166 1 0 8 3 f.root-servers.net. 25166 IN A 192.5.5.241 ;rrset 25166 1 0 8 3 f.root-servers.net. 25166 IN AAAA 2001:500:2f::f ;rrset 25165 1 0 8 3 e.root-servers.net. 25165 IN A 192.203.230.10 ;rrset 25165 1 0 8 3 e.root-servers.net. 25165 IN AAAA 2001:500:a8::e ;rrset 25166 1 0 8 3 g.root-servers.net. 25166 IN A 192.112.36.4 ;rrset 25166 1 0 8 3 g.root-servers.net. 25166 IN AAAA 2001:500:12::d0d ;rrset 25167 1 0 8 3 j.root-servers.net. 25167 IN A 192.58.128.30 ;rrset 25167 1 0 8 3 j.root-servers.net. 25167 IN AAAA 2001:503:c27::2:30 ;rrset 25164 1 0 8 3 h.root-servers.net. 25164 IN A 198.97.190.53 ;rrset 25164 1 0 8 3 h.root-servers.net. 25164 IN AAAA 2001:500:1::53 ;rrset 25167 1 0 8 3 l.root-servers.net. 25167 IN A 199.7.83.42 ;rrset 25167 1 0 8 3 l.root-servers.net. 25167 IN AAAA 2001:500:9f::42 ;rrset 25167 1 0 8 3 d.root-servers.net. 25167 IN A 199.7.91.13 ;rrset 25167 1 0 8 3 d.root-servers.net. 25167 IN AAAA 2001:500:2d::d ;rrset 25165 1 0 8 3 c.root-servers.net. 25165 IN A 192.33.4.12 ;rrset 25166 1 0 8 3 c.root-servers.net. 25166 IN AAAA 2001:500:2::c ;rrset 25165 1 0 8 3 m.root-servers.net. 25165 IN A 202.12.27.33 ;rrset 25165 1 0 8 3 m.root-servers.net. 25165 IN AAAA 2001:dc3::35 ;rrset 25166 1 0 8 3 b.root-servers.net. 25166 IN A 199.9.14.201 ;rrset 25167 1 0 8 3 b.root-servers.net. 25167 IN AAAA 2001:500:200::b ;rrset 25165 1 0 8 3 k.root-servers.net. 25165 IN A 193.0.14.129 ;rrset 25165 1 0 8 3 k.root-servers.net. 25165 IN AAAA 2001:7fd::1 Delegation with 13 names, of which 0 can be examined to query further addresses. It provides 26 IP addresses. 2001:7fd::1 rto 376 msec, ttl 751, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 193.0.14.129 not in infra cache. 2001:500:200::b not in infra cache. 199.9.14.201 rto 369 msec, ttl 481, ping 9 var 90 rtt 369, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:dc3::35 rto 376 msec, ttl 751, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 202.12.27.33 not in infra cache. 2001:500:2::c not in infra cache. 192.33.4.12 not in infra cache. 2001:500:2d::d not in infra cache. 199.7.91.13 not in infra cache. 2001:500:9f::42 rto 376 msec, ttl 751, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 199.7.83.42 rto 356 msec, ttl 751, ping 8 var 87 rtt 356, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:500:1::53 not in infra cache. 198.97.190.53 not in infra cache. 2001:503:c27::2:30 rto 376 msec, ttl 751, ping 0 var 94 rtt 376, tA 0, tAAAA 0, tother 0, EDNS 0 assumed. 192.58.128.30 not in infra cache. 2001:500:12::d0d not in infra cache. 192.112.36.4 rto 328 msec, ttl 751, ping 4 var 81 rtt 328, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:500:a8::e not in infra cache. 192.203.230.10 not in infra cache. 2001:500:2f::f not in infra cache. 192.5.5.241 rto 320 msec, ttl 751, ping 4 var 79 rtt 320, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:ba3e::2:30 not in infra cache. 198.41.0.4 rto 256 msec, ttl 228, ping 4 var 63 rtt 256, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:7fe::53 not in infra cache. 192.36.148.17 not in infra cache. [2.4.4-RELEASE][admin@sg4860.local.lan]/root: -
@johnpoz said in Strange issue - not sure how to fix:
unbound-control -c /var/unbound/unbound.conf lookup .
Yes, when I run those commands, I get very similar output to what you posted, as I should. So I will wait for the next time that domains stop resolving, and run everything again, and then post the results. Unfortunately, I have no idea when that will occur.
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It happened again and I was able to run the various commands you listed above and perform a packet capture.
; <<>> DiG 9.12.2-P1 <<>> h.root-servers.net ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 56121 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 4096 ;; QUESTION SECTION: ;h.root-servers.net. IN A ;; ANSWER SECTION: h.root-servers.net. 86400 IN A 198.97.190.53 ;; Query time: 158 msec ;; SERVER: 127.0.0.1#53(127.0.0.1) ;; WHEN: Sun Feb 23 16:18:59 EST 2020 ;; MSG SIZE rcvd: 63The following name servers are used for lookup of com. ;rrset 85352 13 0 2 0 com. 85352 IN NS a.gtld-servers.net. com. 85352 IN NS b.gtld-servers.net. com. 85352 IN NS c.gtld-servers.net. com. 85352 IN NS d.gtld-servers.net. com. 85352 IN NS e.gtld-servers.net. com. 85352 IN NS f.gtld-servers.net. com. 85352 IN NS g.gtld-servers.net. com. 85352 IN NS h.gtld-servers.net. com. 85352 IN NS i.gtld-servers.net. com. 85352 IN NS j.gtld-servers.net. com. 85352 IN NS k.gtld-servers.net. com. 85352 IN NS l.gtld-servers.net. com. 85352 IN NS m.gtld-servers.net. ;rrset 85352 1 1 11 5 com. 85352 IN DS 30909 8 2 E2D3C916F6DEEAC73294E8268FB5885044A833FC5459588F4A9184CFC41A5766 com. 85352 IN RRSIG DS 8 1 86400 20200307170000 20200223160000 33853 . AkoMkh2radmKCnXu8NeiINg3AlAYfHvuZORUApNH96ZCtOkPZ0vxFgdwnls009OkPO2IYeUuIySROSJNSPc9Ukj/ybot7AyjAv6brrTcYVCg0KvPPSaFLwBCHXuJdUNlIF8xhxv73/gFBEcGThLAmxfeRk2lpODXeXNDbZ9GPnWVeC2KVwEeL22JfBcBmpAxEhNLnufgPLR5Kv9aY+O7cleHDuRpQa4qNSEBgF/88ugrpNdixNx+5FO6Nl7mZRdPjSr97H6EH/aCvlzPMGl7bPVtT/7A9T943yQP4kMznxVRSMNXSMimarzRJhmM0ZE5H1qwUTi+UoeMjBq+mJHmBA== ;{id = 33853} ;rrset 85352 1 0 1 0 m.gtld-servers.net. 85352 IN A 192.55.83.30 ;rrset 85352 1 0 1 0 m.gtld-servers.net. 85352 IN AAAA 2001:501:b1f9::30 ;rrset 85352 1 0 1 0 l.gtld-servers.net. 85352 IN A 192.41.162.30 ;rrset 85352 1 0 1 0 l.gtld-servers.net. 85352 IN AAAA 2001:500:d937::30 ;rrset 85352 1 0 1 0 k.gtld-servers.net. 85352 IN A 192.52.178.30 ;rrset 85352 1 0 1 0 k.gtld-servers.net. 85352 IN AAAA 2001:503:d2d::30 ;rrset 85352 1 0 1 0 j.gtld-servers.net. 85352 IN A 192.48.79.30 ;rrset 85352 1 0 1 0 j.gtld-servers.net. 85352 IN AAAA 2001:502:7094::30 ;rrset 85352 1 0 1 0 i.gtld-servers.net. 85352 IN A 192.43.172.30 ;rrset 85352 1 0 1 0 i.gtld-servers.net. 85352 IN AAAA 2001:503:39c1::30 ;rrset 85352 1 0 1 0 h.gtld-servers.net. 85352 IN A 192.54.112.30 ;rrset 85352 1 0 1 0 h.gtld-servers.net. 85352 IN AAAA 2001:502:8cc::30 ;rrset 85352 1 0 1 0 g.gtld-servers.net. 85352 IN A 192.42.93.30 ;rrset 85352 1 0 1 0 g.gtld-servers.net. 85352 IN AAAA 2001:503:eea3::30 ;rrset 85352 1 0 1 0 f.gtld-servers.net. 85352 IN A 192.35.51.30 ;rrset 85352 1 0 1 0 f.gtld-servers.net. 85352 IN AAAA 2001:503:d414::30 ;rrset 85352 1 0 1 0 e.gtld-servers.net. 85352 IN A 192.12.94.30 ;rrset 85352 1 0 1 0 e.gtld-servers.net. 85352 IN AAAA 2001:502:1ca1::30 ;rrset 85352 1 0 1 0 d.gtld-servers.net. 85352 IN A 192.31.80.30 ;rrset 85352 1 0 1 0 d.gtld-servers.net. 85352 IN AAAA 2001:500:856e::30 ;rrset 85352 1 0 1 0 c.gtld-servers.net. 85352 IN A 192.26.92.30 ;rrset 85352 1 0 1 0 c.gtld-servers.net. 85352 IN AAAA 2001:503:83eb::30 ;rrset 85352 1 0 1 0 b.gtld-servers.net. 85352 IN A 192.33.14.30 ;rrset 85352 1 0 1 0 b.gtld-servers.net. 85352 IN AAAA 2001:503:231d::2:30 ;rrset 85352 1 0 1 0 a.gtld-servers.net. 85352 IN A 192.5.6.30 ;rrset 85352 1 0 1 0 a.gtld-servers.net. 85352 IN AAAA 2001:503:a83e::2:30 Delegation with 13 names, of which 0 can be examined to query further addresses. It provides 26 IP addresses. 2001:503:a83e::2:30 not in infra cache. 192.5.6.30 rto 307 msec, ttl 574, ping 19 var 72 rtt 307, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:231d::2:30 not in infra cache. 192.33.14.30 rto 347 msec, ttl 735, ping 7 var 85 rtt 347, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:83eb::30 not in infra cache. 192.26.92.30 not in infra cache. 2001:500:856e::30 not in infra cache. 192.31.80.30 rto 197 msec, ttl 244, ping 37 var 40 rtt 197, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:502:1ca1::30 not in infra cache. 192.12.94.30 not in infra cache. 2001:503:d414::30 not in infra cache. 192.35.51.30 not in infra cache. 2001:503:eea3::30 not in infra cache. 192.42.93.30 rto 123 msec, ttl 152, ping 23 var 25 rtt 123, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:502:8cc::30 not in infra cache. 192.54.112.30 rto 324 msec, ttl 635, ping 4 var 80 rtt 324, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:503:39c1::30 not in infra cache. 192.43.172.30 rto 298 msec, ttl 573, ping 10 var 72 rtt 298, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:502:7094::30 not in infra cache. 192.48.79.30 rto 752 msec, ttl 384, ping 0 var 94 rtt 376, tA 1, tAAAA 0, tother 0, EDNS 0 assumed. 2001:503:d2d::30 not in infra cache. 192.52.178.30 rto 360 msec, ttl 574, ping 8 var 88 rtt 360, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:500:d937::30 not in infra cache. 192.41.162.30 rto 356 msec, ttl 736, ping 8 var 87 rtt 356, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:501:b1f9::30 not in infra cache. 192.55.83.30 rto 336 msec, ttl 551, ping 24 var 78 rtt 336, tA 0, tAAAA 0, tother 0, EDNS 0 probed.The following name servers are used for lookup of . ;rrset 85317 13 1 8 0 . 85317 IN NS m.root-servers.net. . 85317 IN NS b.root-servers.net. . 85317 IN NS c.root-servers.net. . 85317 IN NS d.root-servers.net. . 85317 IN NS e.root-servers.net. . 85317 IN NS f.root-servers.net. . 85317 IN NS g.root-servers.net. . 85317 IN NS h.root-servers.net. . 85317 IN NS a.root-servers.net. . 85317 IN NS i.root-servers.net. . 85317 IN NS j.root-servers.net. . 85317 IN NS k.root-servers.net. . 85317 IN NS l.root-servers.net. . 85317 IN RRSIG NS 8 0 518400 20200307170000 20200223160000 33853 . GN9hZh6mOFruU2IWiP4EIvALgU6uQLlXo748wScmwsJYCcmPiPFT6y2qNnsJfg06OrI2qhZueL0NNtcZ5W9hGLFff3nzUcOETUnEWcbW4MwIRWDxVQ4MVMmsnIhWM3BCQdA5hG0eIALwJ+9q3aUe+lHhORN98lpYxfs+tx73A+GgmNZUm4Coz44hmhJ6G+mM0mYsMLZ1oAvDH/exgo/VExwEA9P3xyRQb5H09yJdc0cdmygbD8R1L/yjyQUlnyKLOC8ZQ3bpei9NKRXWqv5p29cnpwt4AiaAuZNkCVQA9SIWIKdFVrBh40NsO+RDpEcmh84r30wTVm+qYGT4PItLag== ;{id = 33853} ;rrset 85317 1 0 3 3 l.root-servers.net. 85317 IN A 199.7.83.42 ;rrset 85317 1 0 3 3 l.root-servers.net. 85317 IN AAAA 2001:500:9f::42 ;rrset 85317 1 0 3 3 k.root-servers.net. 85317 IN A 193.0.14.129 ;rrset 85317 1 0 3 3 k.root-servers.net. 85317 IN AAAA 2001:7fd::1 ;rrset 85317 1 0 3 3 j.root-servers.net. 85317 IN A 192.58.128.30 ;rrset 85317 1 0 3 3 j.root-servers.net. 85317 IN AAAA 2001:503:c27::2:30 ;rrset 85317 1 0 3 3 i.root-servers.net. 85317 IN A 192.36.148.17 ;rrset 85317 1 0 3 3 i.root-servers.net. 85317 IN AAAA 2001:7fe::53 ;rrset 85317 1 0 3 3 a.root-servers.net. 85317 IN A 198.41.0.4 ;rrset 85317 1 0 3 3 a.root-servers.net. 85317 IN AAAA 2001:503:ba3e::2:30 ;rrset 86325 1 0 8 3 h.root-servers.net. 86325 IN A 198.97.190.53 ;rrset 85317 1 0 3 3 h.root-servers.net. 85317 IN AAAA 2001:500:1::53 ;rrset 85317 1 0 3 3 g.root-servers.net. 85317 IN A 192.112.36.4 ;rrset 85317 1 0 3 3 g.root-servers.net. 85317 IN AAAA 2001:500:12::d0d ;rrset 85317 1 0 3 3 f.root-servers.net. 85317 IN A 192.5.5.241 ;rrset 85317 1 0 3 3 f.root-servers.net. 85317 IN AAAA 2001:500:2f::f ;rrset 85317 1 0 3 3 e.root-servers.net. 85317 IN A 192.203.230.10 ;rrset 85317 1 0 3 3 e.root-servers.net. 85317 IN AAAA 2001:500:a8::e ;rrset 85317 1 0 3 3 d.root-servers.net. 85317 IN A 199.7.91.13 ;rrset 85317 1 0 3 3 d.root-servers.net. 85317 IN AAAA 2001:500:2d::d ;rrset 85317 1 0 3 3 c.root-servers.net. 85317 IN A 192.33.4.12 ;rrset 85317 1 0 3 3 c.root-servers.net. 85317 IN AAAA 2001:500:2::c ;rrset 85317 1 0 3 3 b.root-servers.net. 85317 IN A 199.9.14.201 ;rrset 85317 1 0 3 3 b.root-servers.net. 85317 IN AAAA 2001:500:200::b ;rrset 85317 1 0 3 3 m.root-servers.net. 85317 IN A 202.12.27.33 ;rrset 85317 1 0 3 3 m.root-servers.net. 85317 IN AAAA 2001:dc3::35 Delegation with 13 names, of which 0 can be examined to query further addresses. It provides 26 IP addresses. 2001:dc3::35 not in infra cache. 202.12.27.33 expired, rto 62969312 msec, tA 2 tAAAA 0 tother 0. 2001:500:200::b not in infra cache. 199.9.14.201 expired, rto 62969312 msec, tA 1 tAAAA 0 tother 0. 2001:500:2::c not in infra cache. 192.33.4.12 rto 210 msec, ttl 110, ping 18 var 48 rtt 210, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:500:2d::d not in infra cache. 199.7.91.13 not in infra cache. 2001:500:a8::e not in infra cache. 192.203.230.10 not in infra cache. 2001:500:2f::f not in infra cache. 192.5.5.241 rto 287 msec, ttl 499, ping 7 var 70 rtt 287, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:500:12::d0d not in infra cache. 192.112.36.4 not in infra cache. 2001:500:1::53 not in infra cache. 198.97.190.53 not in infra cache. 2001:503:ba3e::2:30 not in infra cache. 198.41.0.4 not in infra cache. 2001:7fe::53 not in infra cache. 192.36.148.17 not in infra cache. 2001:503:c27::2:30 not in infra cache. 192.58.128.30 rto 328 msec, ttl 642, ping 4 var 81 rtt 328, tA 0, tAAAA 0, tother 0, EDNS 0 probed. 2001:7fd::1 not in infra cache. 193.0.14.129 not in infra cache. 2001:500:9f::42 not in infra cache. 199.7.83.42 not in infra cache.; <<>> DiG 9.12.2-P1 <<>> feedly.com +trace ;; global options: +cmd . 85262 IN NS m.root-servers.net. . 85262 IN NS b.root-servers.net. . 85262 IN NS c.root-servers.net. . 85262 IN NS d.root-servers.net. . 85262 IN NS e.root-servers.net. . 85262 IN NS f.root-servers.net. . 85262 IN NS g.root-servers.net. . 85262 IN NS h.root-servers.net. . 85262 IN NS a.root-servers.net. . 85262 IN NS i.root-servers.net. . 85262 IN NS j.root-servers.net. . 85262 IN NS k.root-servers.net. . 85262 IN NS l.root-servers.net. . 85262 IN RRSIG NS 8 0 518400 20200307170000 20200223160000 33853 . GN9hZh6mOFruU2IWiP4EIvALgU6uQLlXo748wScmwsJYCcmPiPFT6y2q NnsJfg06OrI2qhZueL0NNtcZ5W9hGLFff3nzUcOETUnEWcbW4MwIRWDx VQ4MVMmsnIhWM3BCQdA5hG0eIALwJ+9q3aUe+lHhORN98lpYxfs+tx73 A+GgmNZUm4Coz44hmhJ6G+mM0mYsMLZ1oAvDH/exgo/VExwEA9P3xyRQ b5H09yJdc0cdmygbD8R1L/yjyQUlnyKLOC8ZQ3bpei9NKRXWqv5p29cn pwt4AiaAuZNkCVQA9SIWIKdFVrBh40NsO+RDpEcmh84r30wTVm+qYGT4 PItLag== ;; Received 525 bytes from 127.0.0.1#53(127.0.0.1) in 0 ms ;; connection timed out; no servers could be reached
What can I learn from all this?
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Did you set that public IP to resolve as local?
Where are the queries to and from .com server Servers?.. I only see queries for the root servers?
You prob want to set number of packets to capture to 0 vs just the 100..
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@johnpoz said in Strange issue - not sure how to fix:
Did you set that public IP to resolve as local?
Yes - to obscure my IP address. Wherever it says "local", it originally listed my IP address.
Where are the queries to and from .com server Servers?.. I only see queries for the root servers?
Not sure. But the packet capture was taken while I ran the command dig feedly.com +trace. I ran it again while trying to browse to feedly.com - results below.
You prob want to set number of packets to capture to 0 vs just the 100..
Done below
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That image is too small for me to make out anything.
Looks like you have some queries for fox.com - but I don't see anything to the cloudflare NS that are for feedly.com
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Unfortunately, I can't seem to upload any images > 1 mb, so that one was the best resolution I could use (if you click on it to open in a separate tab, it should be more readable)
But it does show DNS queries going out to various name servers. This was occurring while I was trying to load feedly.com (unsuccessfully) and in other tabs browsing to other sites (successfully).
Does this help narrow down the issue at all? -
Dude just shrink it... And it sure isn't showing anything over 100 queries... And I tried clicking into - its too small..
If you click into that you can read it can you not..
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The pciture is a screenshot from wireshark - it was the max number of lines I could fit on my screen at one time. When I tried to cut and paste the text itself, the forum software rejects it as being spam, so it won't let me post it. However, I searched the capture file on my end - even though I was trying to resolve feedly.com, there were no entries for feedly.com in the capture (and other DNS requests are going out as expected at the exact same time). It's as if the request to resolve feedly.com is not even getting to the DNS resolver. I am not sure where along the way it is getting blocked.
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And strangest of all - the problem just seemed to fix itself without any intervention on my part. When I tried to browse to feedly.com, it resolved (unfortunately was not performing packet capture at the time). However, I notice that this is at exactly the same time that pfBlocker NG is updating itself/cron job. Is that just a coincidence, or is that pointing to an issue with pfBlocker NG?
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Spoke too soon - feedly.com resolved in firefox (still using the firefox internal cloudfare DNS lookup) but not safari at the same time - i.e. it could resolve when 1.1.1.1 was used but not unbound. As soon as pfBlocker NG finished its update, firefox could not resolve feedly.com any longer.
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Tried another packet capture while browsing to feedly.com, pinging feedly.com, and performing an nslookup via the command prompt. During all of that, feedly.com never appeared in the UDP port 53 packet capture, even though other domains did appear as expected (and resolved without issue) - including websites that I have never accessed in the past. The problem does seem to be limited to feedly. I remain mystified.
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@pfguy2018 said in Strange issue - not sure how to fix:
notice that this is at exactly the same time that pfBlocker NG is updating itself/cron job.
Dude that restarts unbound! And yes that will cause you problems with resolving. As to not seeing anything for feedly in your sniff - because once its cached you don't have to go lookup it up again..
How freaking often do you have pfblocker updating?
Why don't you turn off that firefox nonsense?
Here lets do this - how long has unbound been up?
[2.4.4-RELEASE][admin@sg4860.local.lan]/root: unbound-control -c /var/unbound/unbound.conf status version: 1.9.1 verbosity: 1 threads: 4 modules: 2 [ validator iterator ] uptime: 555956 seconds options: control(ssl) unbound (pid 83160) is running... [2.4.4-RELEASE][admin@sg4860.local.lan]/root: -
Here is another data point. The issue I noted above where I was able to resolve feedly.com while pfBlockerNG was reloading its lists, but was then unable to resolve it once the cron job finished made me look harder at pfBlockerNG. I found an alias in the firewall rules called pfBlockerNGSuppress, which contained feedly.com as one of the addresses. As soon as I removed feedly from that alias and reloaded, feedly.com resolved immediately. Still not sure how this all fits together, but it seems to be working now, and I will monitor to see if it fails again or whether this has solved the problem.
PfBlocker is set to update hourly, which is the default setting that it came with. Would you suggest a lesser frequency?
I have disabled Firefox's use of cloudfare's DNS servers, as you suggested. Out of interest, is your distaste for the use of these servers based on security concerns, or privacy issues, or some other factor?
EDIT:
Here is the output of that command. Note that I had just reloaded the firewall rules when I deleted the entry in the Suppress list as noted above.
version: 1.9.1 verbosity: 3 threads: 4 modules: 2 [ validator iterator ] uptime: 7515 seconds options: control(ssl) unbound (pid 71227) is running...
