[ 1669.961212] br0: port 1(dummy0) entered blocking state
[ 1669.961254] br0: port 1(dummy0) entered disabled state
[ 1669.961287] dummy0: entered allmulticast mode
[ 1669.961332] dummy0: entered promiscuous mode
[ 1669.964235] br0: port 1(dummy0) entered blocking state
[ 1669.964300] br0: port 1(dummy0) entered forwarding state
[ 1670.156187] dummy0: left allmulticast mode
[ 1670.156252] dummy0: left promiscuous mode
[ 1670.156315] br0: port 1(dummy0) entered disabled state