Linux Ethernet Bridging - Apr 2013 - [Bridge] [PATCH] Notify userspace about bridge learning MAC on new port

Hi,

currently, the userspace is informed about the port the MAC is learned 
on a bridge and about the bridge removing the MAC from its forwarding 
table, but not when the MAC is learned on a different port. This is 
inconsistent and makes it difficult for applications to keep track of 
all MACs learned by a bridge on a subset of its ports.

Please find attached a patch that fixes this by sending an RTM_NEWNEIGH 
message when the forwarding destination port changes.

Regards,
  M. Braun
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