Hi all, I have named 9.4.3-P3 running on 2 linux systems(A & B). A has recursion disabled and the B has recursion enabled.
>From a third linux system, I try name resolution using dig or nslookup. In this system, I have resolv.conf as: nameserver A nameserver B When I try to resolve names, using dig (with +notrace) and ping, I observe that both these utilites, upon getting a referral discontinues the resolution process. # dig foo.example.com. ; <<>> DiG 9.3.2 <<>> foo.example.com. ;; global options: printcmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 1004 ;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 13, ADDITIONAL: 0 ;; QUESTION SECTION: ;foo.example.com. IN A ;; AUTHORITY SECTION: . 83311 IN NS e.root-servers.net. . 83311 IN NS f.root-servers.net. . 83311 IN NS g.root-servers.net. . 83311 IN NS h.root-servers.net. . 83311 IN NS i.root-servers.net. . 83311 IN NS j.root-servers.net. . 83311 IN NS k.root-servers.net. . 83311 IN NS l.root-servers.net. . 83311 IN NS m.root-servers.net. . 83311 IN NS a.root-servers.net. . 83311 IN NS b.root-servers.net. . 83311 IN NS c.root-servers.net. . 83311 IN NS d.root-servers.net. ;; Query time: 4 msec ;; SERVER: xx.xxx.xxx.xxx#53(xx.xxx.xxx.xxx) ;; WHEN: Sat Feb 13 21:09:39 2010 ;; MSG SIZE rcvd: 244 # That is, when name server A returns a referral, dig & ping donot try to query the name server, i.e. B, specified in resolv.conf. But, when I use nslookup, I see that it whenever it gets a referral, it queries the next name server specified in resolv.conf. This is a desired behaviour as nslookup has nofail option as default (specified in the man page of nslookup). I would like have "ping" querying the next name sever in the event of receiving a referral from the first name sever. Can anyone suggest whether this is feature is really not supported in dig and ping? Thanks in advance! Regards, Kalpesh.
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