haproxy(1) on Linux
The text 24b4fb3fa3d7, as Debian 6.0 (Squeeze) shipped it.
fast and reliable http reverse proxy and load balancer
Flags it lists
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-D -
-N -
-V -
-c -
-d -
-db -
-de -
-dk -
-dp -
-ds -
-l -
-m -
-n -
-p -
-q -
-s -
-sf -
-st