today, we could not start our DHCP server (NW65-SP7).

The error message on the logger screen was:
"Server-5.70-62: Error - DHCP UDP server port (67) registration failed"

The result was, that our PCs received a wrong IP address.

We didn't make any changes on this server for weeks.

I solved the problem while not starting tomcat5 (this
was the last change on the server weeks ago) but I don't know
whether this was the real reason.

Has anyone had the same problem?
Can tomcat5 block port 67?

Thanks and best regards