Couple of thoughts.
1) piCore doesn't have a network manager. If you are using both eth0 and wlan0, eth0 will be set as the default route. If you unplug eth0, the default route will not automatically change to wlan0. You have to manage that yours...
1) piCore doesn't have a network manager. If you are using both eth0 and wlan0, eth0 will be set as the default route. If you unplug eth0, the default route will not automatically change to wlan0. You have to manage that yours...