[ 2141.500120][T23971] br0: port 1(dummy0) entered blocking state
[ 2141.500482][T23971] br0: port 1(dummy0) entered disabled state
[ 2141.500834][T23971] dummy0: entered allmulticast mode
[ 2141.501870][T23971] dummy0: entered promiscuous mode
[ 2141.529189][T23972] br0: port 1(dummy0) entered blocking state
[ 2141.529608][T23972] br0: port 1(dummy0) entered forwarding state
[ 2144.098772][   T12] dummy0: left allmulticast mode
[ 2144.099237][   T12] dummy0: left promiscuous mode
[ 2144.099568][   T12] br0: port 1(dummy0) entered disabled state