Instead, use the ip route, route -n, or netstat -rn commands. Contact the DNS server administrator to find out why queries are taking so long.
The DNS server takes almost 10 seconds to return a reverse name lookup on the gateway, as seen in the output of dig.
Query time: 8880 msec
Time the commands in the routing table, both with and without name resolution.
# time route -n real 0m0.031s user 0m0.001s sys 0m0.000s # time route real 0m47.377s user 0m0.001s sys 0m0.001s
Time the DNS server.
# dig @<DNS server IP> -x <default gateway IP> ; <<>> DiG 9.3.6-P1-Centos-9.3.6-16.P1.el5 <<>> @<DNS server IP> -x <default gateway IP> ; (1 server found) ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 17443 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;<reverse gateway IP>.in-addr.arpa. IN PTR ;; Query time: 9839 msec ;; SERVER: <DNS server IP>#53(<DNS server IP>) ;; WHEN: Wed Dec 12 11:31:52 2012 ;; MSG SIZE rcvd: 42
