The default subnet is 255.0.0.0 also for the non clasmate i belive the last octet should be .6 so it should be 10.xx.xx.6 with a subnet of 255.0.0.0 as far as connectivity goes if you are tethering the connection (running cable from the robot alot of teams leave the wireless on on the classmate and dont change the ips for it (just what i have noticed, i have done it myself.)
Addressing scheme for clasmate
Ip: 10.xx.xx.5
subnet mask: 255.0.0.0
default gate: CRio
if you have anymore questions please PM and ill see what I can do
