ip for the cube is 192.168.1.254:8000
you need a stratum proxy running to use your cube.
See this excellent thread for more info:
https://bitcointalk.org/index.php?topic=352658.0I run the stratum on RPi - haven't tried running a miner at the same time. Bfgminer apparently has a proxy you can use with the cube but I read somewhere that it was only the windows version. With a little research you can find out if that is still true.