Bryan  Freshman Member

I appear to have solved the problem by waiting until 4:00 am, backing up the ZyWall's configuration, initializing it to factory defaults, and restoring it while the world (my part of it, anyway) slept. Apparently the problem was some log-free gremlin below the level of anything the interface can see. Thanks for the help…

I appreciate your taking the time to make the suggestion, PeterUK, but there are other easier solutions to the problem. I'm seeking to understand it. (I'm the sort of guy who goes to the doctor with a rash and says, "Yes, I know it will go away in a few days but I want to know what it is."

Thanks for the quick reply. The mystery address is 10.0.10.2 on vlan10. As you can see (attachment "ip mac binding"), I can configure 10.0.10.3. No addresses in 10.0.10.0/24 are configured anywhere other than the vlan10 interface config (attached "vlan 10"). The only one which appears in ip/mac binding is 10.0.10.3 for…