Hi All,
         In our recent test, I found a performance drop in master branch. I 
execute the l2bd test case in a 2.5GHZ CPU and found almost 35% drop compared 
to 18.07 release. My test is set two NIC ports to a same bridge domain and send 
traffic to test the l2 forward performance. I found in the master branch, 
l2flood function consume much more CPU cycles than 18.07 which means any test 
use the l2flood function will also have a performance drop. Can anybody kindly 
help to check this issue? Thanks a lot.

Regards,
Yuwei

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