mrouted(8) on OpenBSD
The text b9c8c4845e67, as OpenBSD 7.6, OpenBSD 7.5, OpenBSD 7.4, OpenBSD 7.3, OpenBSD 7.2, OpenBSD 7.1, OpenBSD 7.0, OpenBSD 6.9, OpenBSD 6.8, OpenBSD 6.7 shipped it.
IP multicast routing daemon
Flags it lists
-
-c -
-d -
-p