[root@services:/]->dig -x 192.168.0.2 ; <<>> DiG 9.4.1-P1 <<>> -x 192.168.0.2 ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 9160 ;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 1, ADDITIONAL: 1 ;; QUESTION SECTION: ;2.0.168.192.in-addr.arpa. IN PTR ;; ANSWER SECTION: 2.0.168.192.in-addr.arpa. 604800 IN PTR firewall. ;; AUTHORITY SECTION: 0.168.192.in-addr.arpa. 604800 IN NS localhost. ;; ADDITIONAL SECTION: localhost. 604800 IN A 127.0.0.1 ;; Query time: 13 msec ;; SERVER: 192.168.0.20#53(192.168.0.20) ;; WHEN: Wed Nov 21 08:06:01 2007 ;; MSG SIZE rcvd: 103 [root@services:/]->dig firewall.sav.internal ; <<>> DiG 9.4.1-P1 <<>> firewall.sav.internal ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 47178 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;firewall.sav.internal. IN A ;; Query time: 3 msec ;; SERVER: 192.168.0.20#53(192.168.0.20) ;; WHEN: Wed Nov 21 08:06:06 2007 ;; MSG SIZE rcvd: 39 [root@services:namedb]->cat db.sav.internal $TTL 604800 @ IN SOA services.sav.internal. root.localhost. ( 2007070700 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL ; list master and slave name servers below ns1 IN NS 192.168.0.20 firewall IN A 192.168.0.2 dns IN A 192.168.0.20 [root@services:namedb]->cat db.192.168.0 $TTL 604800 0.168.192.in-addr.arpa. IN SOA ns1.sav.internal. root.localhost. ( 2007070700 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL IN NS localhost. 2 IN PTR firewall. 4 IN PTR wizard. 9 IN PTR win2k. [root@services:/]->dig +nofail +trace firewall.sav.internal ; <<>> DiG 9.4.1-P1 <<>> +nofail +trace firewall.sav.internal ;; global options: printcmd . 518016 IN NS k.root-servers.net. . 518016 IN NS f.root-servers.net. . 518016 IN NS e.root-servers.net. . 518016 IN NS d.root-servers.net. . 518016 IN NS a.root-servers.net. . 518016 IN NS m.root-servers.net. . 518016 IN NS l.root-servers.net. . 518016 IN NS h.root-servers.net. . 518016 IN NS i.root-servers.net. . 518016 IN NS c.root-servers.net. . 518016 IN NS j.root-servers.net. . 518016 IN NS g.root-servers.net. . 518016 IN NS b.root-servers.net. ;; Received 436 bytes from 192.168.0.20#53(192.168.0.20) in 5 ms . 86400 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2007112100 1800 900 604800 86400 ;; Received 114 bytes from 193.0.14.129#53(k.root-servers.net) in 176 ms