cntlm(1) on Linux
The text c175d34af186, as Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it.
authenticating HTTP(S) proxy with TCP/IP tunneling and acceleration
Flags it lists
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-B -
-H -
-I -
-M -
-P -
-T -
-U -
-c -
-f -
-g -
-h -
-s -
-v