This is a sample from my rc.ax25, showing how to do it:
The first line is the actual multiport kiss driver (don't mix it with the
mkiss kernel module), don't use "-c" option if your TNC can't do checksums.
I'm using three ports over a single rs232 wire, and it works fine.
73!
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9A4GC: Ivica Smolcic e-mail: mds@done360.com
QTH Sisak, Croatia lhdkul@negia.net
PR-mail: terhi.victor@logonet.com gtsm.kemiimmuo@u-bordeaux1.fr