I am not sure if this will work for you but while doing some research to provide you with a solution I found that routing details are added to /var/efw/routing
My file has following enteries:
on,X.X.X.X&X.X.X.X&,,UPLINK:main,,,,,,,,
on,X.X.X.X/30,,X.X.X.X,For VC device,,,,,,,
I have replaced real IPs with X.X.X.X
Hope this might help you in some way....