net2kiss(8) on Linux
The text 753b7fca9ac4, as Debian 6.0 (Squeeze), Debian 5.0 (Lenny), Debian 4.0 (Etch), Debian 3.1 (Sarge), Debian 3.0 (Woody), Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it.
convert a network AX.25 driver to a KISS stream on a pseudo-tty
Flags it lists
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-a -
-f -
-i -
-s -
-v -
-z