[ 1544.708996] br0: port 1(dummy0) entered blocking state
[ 1544.709041] br0: port 1(dummy0) entered disabled state
[ 1544.709074] dummy0: entered allmulticast mode
[ 1544.709127] dummy0: entered promiscuous mode
[ 1544.711553] br0: port 1(dummy0) entered blocking state
[ 1544.711587] br0: port 1(dummy0) entered forwarding state
[ 1544.872848] dummy0: left allmulticast mode
[ 1544.872881] dummy0: left promiscuous mode
[ 1544.872910] br0: port 1(dummy0) entered disabled state