[ 1881.326447] br0: port 1(dummy0) entered blocking state
[ 1881.326487] br0: port 1(dummy0) entered disabled state
[ 1881.326521] dummy0: entered allmulticast mode
[ 1881.326576] dummy0: entered promiscuous mode
[ 1881.330377] br0: port 1(dummy0) entered blocking state
[ 1881.330442] br0: port 1(dummy0) entered forwarding state
[ 1881.596223] dummy0: left allmulticast mode
[ 1881.596268] dummy0: left promiscuous mode
[ 1881.596301] br0: port 1(dummy0) entered disabled state