T-Mobile (Generic) R10.1 on WP7603 won't ping or route traffic


I have the Generic R10.1 Firmware on a WP7603 device. I have an active T-Mobile SIM connected. The device registers on the network, and I connect with cm data connect, but I can’t ping anything and it won’t route any traffic I’ve got the default iptables on it, It has an IP address from the Cell. For all intent and purposes, it should be routing traffic, but it’s not. I even modified the iptables to accept everything and still nothing. I can’t ping the gateway.
When it connects, it complains it can’t remove /etc/resolve.conf: device or resource busy.

Anyone got any suggestions?

Here’s an update. It doesn’t appear that the interface actually stays up. If you query with “cm data” it all looks good, but if you look at the route or the ifconfig, there is no interface that’s up that has an IP address. It’s like it comes up and gets an IP address and then won’t stay up.