Hi! I've just changed ISP, and now I need to use my WAN port again (I've only used my BEFW11S4 (which is a router) as a switch with my previous ISP). When connecting the WAN port to the modem, the link LED blinks randomly. On the modem, the link LED lights (as it should). If I connect anything else to the WAN port, it's fine (the link LED lights). If I connect anything else to my modem, everything is fine too. What can be the problem? It seems like to two units work fine, but just don't want to talk to each other (using the WAN port of the BEFW11S4). I can connect my modem to one of the LAN ports, and everything works (but then I can't use my BEFW11S4 as a router, only as a switch).