ser2net(8) on Linux
The text b2f4c0b5c285, as Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
Serial to network proxy
Flags it lists
-
-C -
-P -
-b -
-c -
-d -
-n -
-p -
-u -
-v