nsupdate errors - where to get more info?

[Treptow, Craig]

Hi.  We are running 8.2.2-p5 on AIX 4.3 and have a process in place that does
dynamic updates.  Occasionally, in the logs we see any of these messages:

res_mkupdate error
failed update packet

unknown response: ans=3, auth=1, add=0, rcode=0
failed update packet

res_send: send error, n=-1

unknown response: ans=1, auth=1, add=0, rcode=3
failed update packet

I would like to learn more about what these are trying to tell us.  I can't
seem to find much regarding the specifics to these errors.  I've looked in the
BIND book and in the archives of this list, but didn't find anything.  Any
pointers are greatly appreciated.

Thanks!

Craig Treptow
Principal Financial Group
I/S Network Administration
(515) 247-6207