December 2003
Intermediate to advanced
416 pages
13h 50m
English
dig shows you the complete DNS response message in all its glory with the various sections (header, question, answer, authority, and additional) clearly called out, and with resource records in those sections printed in master file format. This can come in handy if you need to use some of your troubleshooting tool’s output in a zone datafile or in your root hints file. For example, the output produced by:
C:\> dig @a.root-servers.net ns .
looks like this:
; <<>> DiG 8.4 <<>> @a.root-servers.net ns . ; (1 server found) ;; res options: init recurs defnam dnsrch ;; got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 13297 ;; flags: qr aa rd; QUERY: 1, ANSWER: 13, AUTHORITY: 0, ADDITIONAL: 13 ;; QUERY SECTION: ;; ., type = NS, class = IN ;; ANSWER SECTION: . 6D IN NS A.ROOT-SERVERS.NET. . 6D IN NS H.ROOT-SERVERS.NET. . 6D IN NS C.ROOT-SERVERS.NET. . 6D IN NS G.ROOT-SERVERS.NET. . 6D IN NS F.ROOT-SERVERS.NET. . 6D IN NS B.ROOT-SERVERS.NET. . 6D IN NS J.ROOT-SERVERS.NET. . 6D IN NS K.ROOT-SERVERS.NET. . 6D IN NS L.ROOT-SERVERS.NET. . 6D IN NS M.ROOT-SERVERS.NET. . 6D IN NS I.ROOT-SERVERS.NET. . 6D IN NS E.ROOT-SERVERS.NET. . 6D IN NS D.ROOT-SERVERS.NET. ;; ADDITIONAL SECTION: A.ROOT-SERVERS.NET. 5w6d16h IN A 198.41.0.4 H.ROOT-SERVERS.NET. 5w6d16h IN A 128.63.2.53 C.ROOT-SERVERS.NET. 5w6d16h IN A 192.33.4.12 G.ROOT-SERVERS.NET. 5w6d16h IN A 192.112.36.4 F.ROOT-SERVERS.NET. 5w6d16h IN A 192.5.5.241 B.ROOT-SERVERS.NET. 5w6d16h IN A 128.9.0.107 J.ROOT-SERVERS.NET. ...