HP-UX IP Address and Client Management Administrator's Guide HP-UX 11i v2, HP-UX 11i v3

Set query type to ns (name server). Look up the div.inc.com domain.
Non-authoritative answer:
div.inc.com nameserver = walleye.div.inc.com
div.inc.com nameserver = friday.div.inc.com
Name server records for div.inc.com, the delegated subdomain. Authoritative answers
can be found from:
walleye.div.inc.com inet address = 15.19.13.197
friday.div.inc.com inet address = 15.19.10.74
Address records for the name servers for div.inc.com.
• Dumping the name server database
Because the name server caches information, a database dump can be searched for the
NS and A records for the subdomain. If no NS or A records exist, the parent server for
the subdomain or the root servers are not reachable. If NS and A records exist, check
their correctness. Then try pinging the addresses of the name servers to see if they are
reachable.
• Name server debugging output
Turn on debugging to level 1 and try to look up a name in the domain. Verify the debug
output for name server retransmissions. This indicates which servers are not responding.
Verify that the servers and their addresses are correct, if possible.
8. The local domain is not set. The local domain is used to complete names that do not end
with a dot. To set the local domain, either set the host name (hostname) of the local system
to a domain name (without a trailing dot), or add a domain entry to /etc/resolv.conf.
• nslookup
nslookup gives a warning that the local domain is not set.
• Name server debugging output
The debug output at level 1 shows names being looked up that are not domain names.
• ping hostname
hostname is found only when it is a completely specified domain name (with or without
a trailing dot).
9. The /etc/nsswitch.conf file, if it exists, is not configured correctly. If you want to query
BIND before querying NIS or the /etc/hosts file, make sure dns is listed first on the
hosts line. See the HP-UX Internet Services Administrator’s Guide for information on how
to configure the name service switch.
10. The /etc/hosts file or NIS contains incorrect data. The name service switch
(/etc/nsswitch.conf) allows host name lookups in /etc/hosts or NIS, and one of
those databases contains incorrect data. For information on configuring the /etc/hosts
file, see the HP-UX Internet Services Administrator’s Guide for information on how to edit
the /etc/hosts file. For information on NIS, see NIS Administrator's Guide.
Understanding Name Server Debugging Output
To diagnose problems in the debugging output of the name server, you need to know what
output from a successful query looks like. The following two examples show output from
successful host name lookups. The first example does not involve any retransmissions, while the
second example does. Note that debugging output looks the same whether it comes from a
master, slave, or caching-only server.
Troubleshooting the BIND Name Server 95