smcrouted(8) on Linux
The text f91e70248c95, as Debian 11 (Bullseye) shipped it.
SMCRoute, a static multicast router
Flags it lists
-
-I -
-N -
-P -
-c -
-d -
-e -
-f -
-l -
-n -
-s -
-t -
-v