gethostbyaddr messages in syslog.

[Sean Bastille]

For starters, let me explain that I work with a large network, and we do have many systems that change IP address several times a day.

That being said, I've noticed two systems that we have running HPUX 11.0 generate messages in syslog that look like:
gethostbyaddr: ! .

I've seen this message before on Solaris. This problem was caused by a server changing it's IP address, and nscd (name service cache daemon) had bad information, and was letting us know.

I think it's very likely that this is the same problem here, however I can not find any documentation on the system that refers to a cache daemon, let alone how to invalidate the cache, or disable caching all together (as was the solution on our Solaris system).

This host is also a collection station for NNM, so it is destined to see cache problems for the rest of it's life.

How do I regularly invalidate that cache, or preferably, disable it all together.

[Andreas Voss]

Hi,

i'm not sure but when using DNS you have an entry:
cache . db.cache
in the /etc/named.boot
Perhaps the manual (man named) give you some hits for the cache mechanism.

Regards