[RFC] ipmr: About origin IP address of flow in multicast routing API

Hello,

Context: IGMP Proxying.

For using multicast routing API with setsockopt and MRT_ADD_MFC, we need to set the mfcc_origin in a struct mfcctl.

Is there a way to use a wildcard for mfcc_origin to say "any origin" IP address, by example 0.0.0.0 ?

Thus we could add a MFC with only the multicast group and the mfcc_parent, reading a SOCK_RAW/IPPROTO_IGMP socket, without the need to listen the multicast flow to find the origin IP.

Any thought ?

Francois-Xavier Le Bail