I've been trying to set someone up with a cable modem under linux. The
device appears to work using CDCEther and usbnet modules, and I have had
the same model of modem working on a different installation. The usbnet
device appears under ifconfig with all of the settings assigned
correctly. The settings are:
202.0.41.*** IP
255.255.252.0 Subnet mask
203.79.116.1 Default gateway
As you can see, the network number of the host IP and the gateway IP do
not match so when the default gateway is added using: