help needed with slattach

Hi again,

I am trying to "create" a network interface bound to the serial port COM1 (/dev/cuad0). I am issuing these commands:

slattach -l -f -s 9600 /dev/cuad0
->This command runs well.

Then I need to "map" the ready serial port to a network interface, right?

ifconfig XXX
How do I know whitch interface must be placeed in the xxx section? I have to put there the interface that slattach returns, right? I cant see it.

Please, could you help me?