I was put to the task of making these blasted phones work on an R75.40 cluster. I've gotten the 9630, 9640, & 9650 all to work without a hitch (no thanks to Avaya). It's just the 9611 that's giving me a problem. It seems to create the tunnel and receive an IP address from our DHCP servers ok, but it's like the phone doesn't know what to do with that address. You can look at the phone config and it will show the given address, but you never see that address making connections to the http, or call servers. Also, not sure if this has anything to do with it, but the MAC on the phone is seen as b4:b0:17:xx:xx:xx which is a valid mac for Avaya, but once in the tunnel it's showing as b4:b0:00:00:00:00 which is invalid.
Would anyone know what's going on here?