Mailinglist Archive: opensuse (2974 mails)

["Victor R. Cardona" <vcardona@xxxxxxxx>]

Steven T. Hatton wrote:

> I have been using the 192.168.0.0 network space for some time now.  Recently 
> I discovered I was unable to get nslookups.  I was digging around the other 
> day with some of the bindutils and found some university was using that in a 
> way that was visible out on the internet.  I really do not understand how 
> bind works, but I do know I have had strange behavior lately.  It takes 
> forever to contact my own systems.  I have my dns configured to be the SOA 
> for my domin, so I don't know why this would happen.  The nslookup bellow 
> shows you what I am getting.  My DNS server is 192.168.0.4.  The other 
> bindutils find my server and return meaningful results that make sense in my 
> domain.
>
> Does anybody else run a name server for an internal network that remains 
> connected to the internet 24x7?  Do you understand what is going on here?
> ___________________________________________________________
> bash-2.04# nslookup
> *** Can't find server name for address 192.168.0.4: Non-exist
> ent host/domain
> *** Default servers are not available
>
> __________________________________________________ 
>
> bash-2.04# nslookup -d
> ;; res_nmkquery(QUERY, 4.0.168.192.in-addr.arpa, IN, PTR)
> ------------
> Got answer:
>     HEADER:
>         opcode = QUERY, id = 63969, rcode = NXDOMAIN
>         header flags:  response, want recursion, recursion avail.
>         questions = 1,  answers = 0,  authority records = 1,  additional = 0
>  
>     QUESTIONS:
>         4.0.168.192.in-addr.arpa, type = PTR, class = IN
>     AUTHORITY RECORDS:
>     ->  168.192.in-addr.arpa
>         ttl = 5073 (1h24m33s)
>         origin = blackhole.isi.edu
>         mail addr = bmanning.isi.edu
>         serial = 19971802
>         refresh = 10800 (3H)
>         retry   = 900 (15M)
>         expire  = 604800 (1W)
>         minimum ttl = 86400 (1D)
>  
> ------------
> *** Can't find server name for address 192.168.0.4: Non-existent host/domain
> *** Default servers are not available
> bash-2.04# 
I believe that blackhole.isi.edu is one of the root nameservers. Did you 
configure your nameserver as a master for the 0.168.192.IN-ADDR.ARPA zone?

Victor Cardona