Customer has a requirement to send data to a serial port on a 3200 Mobile Access Router using SLIP on the serial interface. Since the mobile network is the only one visible from the HA, I'm trying to NAT from the mobile network to another subnet hanging off the serial port. I seem to be having problems with routing because I can't get the NAT to work even though the default route in the MAR is the Tunnel0 interface. Is there something different that needs to be done to work with the mobile ip tunnel?
I have this problem too.