From: Linus Lüssing <linus.luess...@c0d3.blue> Date: Mon, 21 Jan 2019 07:26:24 +0100
> This patchset adds initial Multicast Router Discovery support to > the Linux bridge (RFC4286). With MRD it is possible to detect multicast > routers and mark bridge ports and forward multicast packets to such routers > accordingly. > > So far, multicast routers are detected via IGMP/MLD queries and PIM > messages in the Linux bridge. As there is only one active, selected > querier at a time RFC4541 ("Considerations for Internet Group Management > Protocol (IGMP) and Multicast Listener Discovery (MLD) Snooping > Switches") section 2.1.1.a) recommends snooping Multicast Router > Advertisements as provided by MRD (RFC4286). > > > The first two patches are refactoring some existing code which is reused > for parsing the Multicast Router Advertisements later in the fourth > patch. The third patch lets the bridge join the all-snoopers multicast > address to be able to reliably receive the Multicast Router > Advertisements. ... Series applied, thanks!