[ 2138.845764][T14711] br0: port 1(dummy0) entered blocking state
[ 2138.845962][T14711] br0: port 1(dummy0) entered disabled state
[ 2138.846131][T14711] dummy0: entered allmulticast mode
[ 2138.847163][T14711] dummy0: entered promiscuous mode
[ 2138.877100][T14712] br0: port 1(dummy0) entered blocking state
[ 2138.877411][T14712] br0: port 1(dummy0) entered forwarding state
[ 2141.274386][   T12] dummy0: left allmulticast mode
[ 2141.275468][   T12] dummy0: left promiscuous mode
[ 2141.275717][   T12] br0: port 1(dummy0) entered disabled state