IPNATHLP, Event 30001, No Solution from MS

  • Thread starter Thread starter Derek
  • Start date Start date
D

Derek

Hi all,



I have a system that has begun issuing event ID 30001, reading as follows:


Description: The DHCP allocator was unable to check whether the IP address
x.x.x.x is in use on the network for local IP address X.X.X.X. This error
may indicate lack of support for address-resolution on the network, or an
error condition on the local machine. The data is the error code.

where x.x.x.x is the IP address that NAT is attempting to lease out to a
client, and X.X.X.X is the IP address of the interface running the DHCP
allocator service in NAT.



I checked out the MS KB and found this article, which did not help:



http://support.microsoft.com/default.aspx?scid=kb;en-us;272076&Product=win2000



The article states to find a system with the address mentioned, however,
there are hundreds of these appearing in the event log, and this is a less
than 20 system LAN. I also can't find any system with duplicate IPs. This
was working fine up until roughly a month or so ago. There's literally
hundreds of these, occurring on nearly every IP in the scope assigned in the
RRAS NAT config.



Any ideas is appreciated, I've searched just about everywhere and can't
figure it out. Running the latest service pack and all updates. I've
reinstalled RRAS, no joy. Still getting these errors. Interestingly, the
systems can connect, and get IPs, just fine. All except one MacIntosh.
However, the errors come up whether that Mac is in the office or not. I
don't believe these two to be related.



Anybody seen anything like this before? I have more than a couple of
networks running like this, and none of them have had this problem before.
My searching of the newsgroups and KB has come up with next to nothing.
Getting desperate.



Thanks,

Derek
 
Hi Derek:

This is kind of an old thread, so I don't know you'll see this reply
but I'll try anyway.

I had the very same problem as you (also have multiple machines wit
just one that kept having IPNATHLP errors in the event log). Th
solution I found (and I don't know why or how its related) was to tur
off system restore. It sounds crazy, but try it.

What I found happening is this particular system would reboot itself
few times for no apparent reason even with the reboot feature disabled
My guess is during the reboots, the IPNATHLP error would pop up as i
tried to re-join the network as an ICS server.

All I can say for sure is since shutting down system restore, ther
have been no unscheduled reboots and no more events in the log. Jus
FYI, I did try changing the system restore size and cleaning up th
system restore files first, but the only thing that worked was shuttin
the thing down all together. One of these days I'll experiment to se
if some changes to the parameters of system restore will get to wor
properly with the system again, but for now, this is what I can offer.

Hope this helps!

Be


-
BenC
 
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