Zyxel P-660R-D1 client list duplicate entries

Morten Bock — 29. juli 2009

This is mainly just a "note to self" about how to solve this problem if I come across it again.

Problem is that somehow the web interface for the router allowed me to enter the same ip/mac address to the "client list" table. This of course is not great, and for some reason there is no "delete" button on there. It just gave me an "ERROR: Duplicate MAC Address!" message. So I had to do a lot of digging to find a way to delete it.

In short:

1. Telnet to the router
2. Go to the Command Line if you are not already there
3. Type this command: "ip dhcp enif0 static delete all"

I found this in a CLI reference for another zyxel router (PDF).

I hope this might help out others in the same situation :-)