From: Bernhard Thaler <bernhard.thaler@xxxxxxxx> Date: Mon, 4 May 2015 22:47:13 +0200 > BR_GROUPFWD_RESTRICTED bitmask restricts users from setting values to > /sys/class/net/brX/bridge/group_fwd_mask that allow forwarding of > some IEEE 802.1D Table 7-10 Reserved addresses: > > (MAC Control) 802.3 01-80-C2-00-00-01 > (Link Aggregation) 802.3 01-80-C2-00-00-02 > 802.1AB LLDP 01-80-C2-00-00-0E > > Change BR_GROUPFWD_RESTRICTED to allow to forward LLDP frames and document > group_fwd_mask. > > e.g. > echo 16384 > /sys/class/net/brX/bridge/group_fwd_mask > allows to forward LLDP frames. > > This may be needed for bridge setups used for network troubleshooting or > any other scenario where forwarding of LLDP frames is desired (e.g. bridge > connecting a virtual machine to real switch transmitting LLDP frames that > virtual machine needs to receive). > > Tested on a simple bridge setup with two interfaces and host transmitting > LLDP frames on one side of this bridge (used lldpd). Setting group_fwd_mask > as described above lets LLDP frames traverse bridge. > > Signed-off-by: Bernhard Thaler <bernhard.thaler@xxxxxxxx> Applied, thanks.
