BIND Server address not displayed

wave

Hi guys,

I'm working with a couple of BIND servers and everything is running smoothly. I'm curious as to why the domain name of the DNS server isn't returned when I do an nslookup, the IP is returned instead:

admin@ns1:/etc/bind$ nslookup red
Server: 192.168.56.100 <-- I would have expected this to read "Server: red.binding.edu
Address: 192.168.56.100#53


Name: red.binding.edu
Address: 192.168.56.100


admin@ns1:/etc/bind$ nslookup 192.168.56.100
Server: 192.168.56.100
Address: 192.168.56.100#53


100.56.168.192.in-addr.arpa name = red.binding.edu.


Resolv.conf looks like this:

domain binding.edu
nameserver 192.168.56.100

No syslog errors appear when restarting bind. Both named.conf and the zone files return OKs when checked. For some reason it's not pulling the reverse DNS, yet a nslookup of the IP returns the PTR record.

ChooseLife

That is a good question, and the answer is this:

"Server" line of nslookup output shows the DNS server being queried. If you do not specify the server to query, nslookup uses the local DNS server provided by the OS (from /etc/resolv.conf on Linux). This local server is always definied by its IP address, otherwise a loop is created - one would need to resolve DNS name of the DNS server before being able to resolve any DNS name.

Your output is completely normal and shows no problems with configucation. If you want to see red.binding.edu in the server field, just explicitly tell nslookup to query it:

$ nslookup red red.binding.edu

Hope that helps