Just wanted to contribute my 2 cents worth of experience while trying to get my N800 connect to my Linksys WRT54g router running DD-WRT. I've been having this link local problem ever since, but have been really puzzled why it simply wouldn't work. So experimenting with various wifi settings on the router, I noticed that if I used simply "TKIP" for my WPA2 instead of "TKIP+AES" it works perfectly!