[ 2027.251865][T27711] br0: port 1(dummy0) entered blocking state
[ 2027.252050][T27711] br0: port 1(dummy0) entered disabled state
[ 2027.252218][T27711] dummy0: entered allmulticast mode
[ 2027.253083][T27711] dummy0: entered promiscuous mode
[ 2027.278411][T27712] br0: port 1(dummy0) entered blocking state
[ 2027.278722][T27712] br0: port 1(dummy0) entered forwarding state
[ 2029.270751][   T12] dummy0: left allmulticast mode
[ 2029.271716][   T12] dummy0: left promiscuous mode
[ 2029.271949][   T12] br0: port 1(dummy0) entered disabled state