Hi all I am trying to bridge an ethernet card to mkiss.c which implements the ax25 protocol for serial ttys. I have had trouble getting this to work and I have a few general questions... (i) Would one expect ax25's acknowledgement to cause trouble with forwarding non-source ip packets like the wlan firmware is reputed to(And in so doing make bridging impossible). (ii) If one were to write a device driver for the serial port that does the KISS procotol without ax25 at all (ie imitate Ethernet and use line disciplines to talk to the serial port but avoid ax25), then is there a format or model on which to base such a driver? For example, the driver SNULL in Alessandro Rubini's book on LINUX DEVICE DRIVERS is said to be Ethernet compatible and is generally available in source. What about PLIP? Maybe I could model the driver on PLIP which is Ethernet compatible? Gerard