Resolver Question

[Kevin Darcy]

Offhand, I'd say nslookup is getting confused by the fact that multiple PTR's
exist for  2.228.214.206.in-addr.arpa.

Get rid of the extraneous PTR and use a real lookup tool like "dig".


- Kevin

Michael wrote:

> My DNS seems to be operating correctly. The operative word there
> being seems.  I am no BIND wizard.
>
> I get the following output when I access my name server to lookup
> the name of the name server (or any other name) debug is set in
> the resolver.
>
> COuld someone enlighten me as to the meaning of the first few
> lines of the output from nslookup?
>
> internal.net is a ficticious name for the internal domain.
> The external domain is urbanna.net (and a couple of others).
>
> Changing this file seems to have no effect I still get the
> error on the first nameserver listed in the file.
>
> /etc/resolv.conf contains:
> domain internal.net
> search internal.net
> nameserver 206.214.228.101
> nameserver 206.214.228.2
> nameserver 206.214.228.45
> options debug
>
> The command was $>nslookup vast.urbanna.net.  It produced the following
> output. This first line makes no sense to me. Help.
>
> *** Can't find server name for address 206.214.228.101: No information
>
> ;; res_setoptions(" debug
> ", "conf")..
> ;;      debug
> ;; res_nmkquery(QUERY, 101.228.214.206.in-addr.arpa, IN, PTR)
> ------------
> Got answer:
>     HEADER:
>         opcode = QUERY, id = 51920, rcode = NOERROR
>         header flags:  response, auth. answer, want recursion, recursion avail.
>         questions = 1,  answers = 0,  authority records = 1,  additional = 0
>
>     QUESTIONS:
>         101.228.214.206.in-addr.arpa, type = PTR, class = IN
>     AUTHORITY RECORDS:
>     ->  101.228.214.206.in-addr.arpa
>         ttl = 86400 (1D)
>         origin = vast.urbanna.net
>         mail addr = root.urbanna.net
>         serial = 20000824
>         refresh = 10800 (3H)
>         retry   = 1800 (30M)
>         expire  = 604800 (1W)
>         minimum ttl = 86400 (1D)
>
> ------------
> 101.228.214.206.in-addr.arpa
>         ttl = 86400 (1D)
>         origin = vast.urbanna.net
>         mail addr = root.urbanna.net
>         serial = 20000824
>         refresh = 10800 (3H)
>         retry   = 1800 (30M)
>         expire  = 604800 (1W)
>         minimum ttl = 86400 (1D)
> ;; res_nmkquery(QUERY, 2.228.214.206.in-addr.arpa, IN, PTR)
> ------------
> Got answer:
>     HEADER:
>         opcode = QUERY, id = 51921, rcode = NOERROR
>         header flags:  response, auth. answer, want recursion, recursion avail.
>         questions = 1,  answers = 2,  authority records = 1,  additional = 1
>
>     QUESTIONS:
>         2.228.214.206.in-addr.arpa, type = PTR, class = IN
>     ANSWERS:
>     ->  2.228.214.206.in-addr.arpa
>         name = myhost.ccsinc.com
>         ttl = 86400 (1D)
>     ->  2.228.214.206.in-addr.arpa
>         name = mail.ccsinc.com
>         ttl = 86400 (1D)
>     AUTHORITY RECORDS:
>     ->  228.214.206.in-addr.arpa
>         nameserver = myhost.ccsinc.com
>         ttl = 86400 (1D)
>     ADDITIONAL RECORDS:
>     ->  myhost.ccsinc.com
>         internet address = 206.214.228.2
>         ttl = 86400 (1D)
>
> ------------
> Server:  myhost.ccsinc.com
> Address:  206.214.228.2
>
> ;; res_nmkquery(QUERY, vast.urbanna.net, IN, A)
> ------------
> Got answer:
>     HEADER:
>         opcode = QUERY, id = 51922, rcode = NOERROR
>         header flags:  response, want recursion, recursion avail.
>         questions = 1,  answers = 1,  authority records = 1,  additional = 1
>
>     QUESTIONS:
>         vast.urbanna.net, type = A, class = IN
>     ANSWERS:
>     ->  vast.urbanna.net
>         internet address = 206.214.228.101
>         ttl = 82264 (22h51m4s)
>     AUTHORITY RECORDS:
>     ->  urbanna.NET
>         nameserver = vast.urbanna.net
>         ttl = 9845 (2h44m5s)
>     ADDITIONAL RECORDS:
>     ->  vast.urbanna.net
>         internet address = 206.214.228.101
>         ttl = 82264 (22h51m4s)
>
> ------------
> Non-authoritative answer:
> Name:    vast.urbanna.net
> Address:  206.214.228.101
>
> --
> Public Key at http://pgpkeys.mit.edu:11371
> Public Key Encryption?  http://www.cryptography.org/getpgp.htm
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