Q

DNS proxy agent unable to bind to the IP address -- error: ipnathlp event 31002

Networking expert Cricket Liu explains what causes this error: ipnathlp event 31002 and why it is bad for TCP/IP.

In my event viewer, I found this error: ipnathlp event 31002. The DNS proxy agent was unable to bind to the IP address 192.168.x.x. This error may indicate a problem with TCP/IP networking. The data is the error code (data: 0000 id 27 00 00). Should I mind this error while I have no proxy there?
I believe you're seeing this error message because you're trying to run Microsoft's Internet Connection Sharing (ICS) service on the same computer that's running your name server. ICS automatically starts a DNS proxy (the one mentioned in the error message) to relay local clients' DNS queries to the Internet. But the DNS proxy listens on the same UDP and TCP ports that the name server uses, which is a no-no in TCP/IP networking. So you'll have to disable ICS on this computer to make the error go away.
This was first published in August 2004

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