On 25/02/2019 17.04, Stefan Vater wrote:
Hi,
thanks for the discussion! Here is what I get:
linux:/home/user # dig +trace mit.edu ;; Warning: Message parser reports malformed message packet.
Huh ???
; <<>> DiG 9.11.2 <<>> +trace mit.edu ;; global options: +cmd . 198198 IN NS c.root-servers.net. . 198198 IN NS d.root-servers.net. . 198198 IN NS e.root-servers.net. . 198198 IN NS f.root-servers.net. . 198198 IN NS g.root-servers.net. . 198198 IN NS h.root-servers.net. . 198198 IN NS i.root-servers.net. . 198198 IN NS j.root-servers.net. . 198198 IN NS a.root-servers.net. . 198198 IN NS k.root-servers.net. . 198198 IN NS l.root-servers.net. . 198198 IN NS m.root-servers.net. . 198198 IN NS b.root-servers.net. couldn't get address for 'c.root-servers.net': not found couldn't get address for 'd.root-servers.net': not found couldn't get address for 'e.root-servers.net': not found couldn't get address for 'f.root-servers.net': not found couldn't get address for 'g.root-servers.net': not found couldn't get address for 'h.root-servers.net': not found couldn't get address for 'i.root-servers.net': not found couldn't get address for 'j.root-servers.net': not found couldn't get address for 'a.root-servers.net': not found couldn't get address for 'k.root-servers.net': not found couldn't get address for 'l.root-servers.net': not found couldn't get address for 'm.root-servers.net': not found couldn't get address for 'b.root-servers.net': not found dig: couldn't get address for 'c.root-servers.net': no more
This is bad. That server doesn't have the root server list. But it does not say who it is asking this from. I don't think this is your router. :-?? Compare: cer@Telcontar:~> dig +trace mit.edu ; <<>> DiG 9.11.2 <<>> +trace mit.edu ;; global options: +cmd . 70724 IN NS m.root-servers.net. . 70724 IN NS j.root-servers.net. . 70724 IN NS i.root-servers.net. . 70724 IN NS a.root-servers.net. . 70724 IN NS d.root-servers.net. . 70724 IN NS l.root-servers.net. . 70724 IN NS h.root-servers.net. . 70724 IN NS g.root-servers.net. . 70724 IN NS b.root-servers.net. . 70724 IN NS e.root-servers.net. . 70724 IN NS c.root-servers.net. . 70724 IN NS f.root-servers.net. . 70724 IN NS k.root-servers.net. . 486616 IN RRSIG NS 8 0 518400 20190310050000 20190225040000 16749 . Xe800lRoJCT/.....== ;; Received 1125 bytes from 192.168.1.14#53(192.168.1.14) in 6 ms edu. 172800 IN NS a.edu-servers.net. edu. 172800 IN NS b.edu-servers.net. edu. 172800 IN NS c.edu-servers.net. ... edu. 86400 IN DS 28065 8 2 4172496CDE85534E51129040355BD04B1FCFEBAE996DFDDE652006F6 F8B2CE76 edu. 86400 IN RRSIG DS 8 1 86400 20190310050000 20190225040000 16749 . ....ZKTZYw== ;; Received 1166 bytes from 198.41.0.4#53(a.root-servers.net) in 45 ms mit.edu. 172800 IN NS usw2.akam.net. mit.edu. 172800 IN NS asia1.akam.net. 9DHS4EP5G85PF9NUFK06HEK0O48QGK77.edu. 86400 IN NSEC3 1 1 0 - 9V5L4LUB1VNJ9EQQLIHEQCBREACL25O0 NS SOA RRSIG DNSKEY NSEC3PARAM 9DHS4EP5G85PF9NUFK06HEK0O48QGK77.edu. 86400 IN RRSIG NSEC3 8 2 86400 20190304142257 20190225131257 47927 edu. ayzh+...7na Hqo= H8CAKHRTFVO1D0BGHOEPUR2UF99DBSQP.edu. 86400 IN NSEC3 1 1 0 - I4667HA7DROBISP0J03FLRA51T795C7K NS DS RRSIG H8CAKHRTFVO1D0BGHOEPUR2UF99DBSQP.edu. 86400 IN RRSIG NSEC3 8 2 86400 20190304140408 20190225125408 47927 edu. HCyi... 9VI= ;; Received 688 bytes from 192.31.80.30#53(d.edu-servers.net) in 47 ms mit.edu. 20 IN A 23.217.168.218 ;; Received 52 bytes from 96.7.49.64#53(use2.akam.net) in 115 ms cer@Telcontar:~> Oh, just now I see Jiri Slaby answer. nscd again! -- Cheers / Saludos, Carlos E. R. (from 15.0 x86_64 at Telcontar)