On Wed, 2014-06-25 at 16:13 -0700, Stephen Hemminger wrote:

quoted

The bridge code only set PACKET_HOST on packets sent to the bridge mac
address, packets sent to other local mac addresses are sent to upper
layers, but ignored because they are marked as PACKET_OTHERHOST.

Signed-off-by: Maxime Bizon <redacted>

What are you trying to do? Bridge device itself only has one MAC address.
Are you trying to run macvlan on top of bridge?
We only respond to ARP with bridge's MAC address.

host1 uses a bridge with two interfaces: ethernet and wireless (AP mode
using hostapd)

for some reasons, hostapd kept adding and removing the interface from
the bridge, triggering a mac address of the bridge change each time (I
did not notice that).

Another host had a static arp entry for host1, using the ethernet mac
address, so its packets to host1 were randomly trashed depending on the
current mac of the bridge.

I have since fixed this by setting a static mac address on the bridge to
prevent dynamic change, but I thought this patch would prevent other
people from having the same bug in the future.

What do you think ?

-- 
Maxime