Hi Ryat3
Yes I know that " 00-1c-bf-85-d9-59 " is the mac address of the intruder, but I miss a status page in DLINK 890L like found on the old routers eg DIR655, a page like the one found under >setup>networks settings where you can see a list of all connected clients MAC, IP and hostnames.
Or a status page
This way it is easy to identify the owner of the mac address.
The mac could be a ouside guest or guest inside the house, but it is difficult to find out.
I do belive that " 00-1c-bf-85-d9-59 " is a PC client within the house, it happens all the time, dont know why, but now I am not so worried anymore