rtpproxy(8) on Linux
The text 218930471ccc, as Debian 4.0 (Etch) shipped it.
RTP (Real-time Transport Protocol) Proxy Server
Flags it lists
-
-2 -
-6 -
-? -
-R -
-S -
-T -
-f -
-l -
-p -
-r -
-s -
-t -
-v