Special Edition Using Linux®, Sixth Edition

Troubleshooting

When I use nslookup interactively, I get the following error:

*** Can't find server name for address 127.0.0.1: Non-existent host/domain

Your DNS server is running, but you haven't correctly configured your localhost reverse lookup file. Remember that within the reverse file, your line citing 127.0.0.1 should look like this:

1.0.0.127.in-addr.arpa.         IN      PTR     localhost.

Note that the IP address is written backwards.

How can I tell if I'm using my caching name server?

First, make sure your /etc/hosts file has the following as the first name server line:

nameserver 127.0.0.1

Then, start nslookup with no arguments. Your default server should be localhost with address 127.0.0.1. If it's not, you're not using your local name server. ...