This makes it easier to populate the global variables we'll need for
handling multicast, and also means we don't have to worry about keeping the
BPF object file around (since it'll be statically linked).
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
This is needed to be able to react to interfaces going down so we can
allow multicast on a secondary interface if the primary goes down. We don't
actually react to the event yet, just print it; handling this will be added
in a subsequent commit.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Add an example to filter looping packets on (for instance) a bond
interface, by recording the egress MAC+VLAN and dropping any packets that
come in on other (related) interfaces with the same MAC+VLAN.
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
