[ 1950.363929][T20541] br0: port 1(dummy0) entered blocking state
[ 1950.364113][T20541] br0: port 1(dummy0) entered disabled state
[ 1950.364273][T20541] dummy0: entered allmulticast mode
[ 1950.365690][T20541] dummy0: entered promiscuous mode
[ 1950.397100][T20542] br0: port 1(dummy0) entered blocking state
[ 1950.397392][T20542] br0: port 1(dummy0) entered forwarding state
[ 1952.405133][   T12] dummy0: left allmulticast mode
[ 1952.406056][   T12] dummy0: left promiscuous mode
[ 1952.406290][   T12] br0: port 1(dummy0) entered disabled state