[ 1892.065175] br0: port 1(dummy0) entered blocking state
[ 1892.065227] br0: port 1(dummy0) entered disabled state
[ 1892.065291] dummy0: entered allmulticast mode
[ 1892.065350] dummy0: entered promiscuous mode
[ 1892.069603] br0: port 1(dummy0) entered blocking state
[ 1892.069679] br0: port 1(dummy0) entered forwarding state
[ 1892.357815] dummy0: left allmulticast mode
[ 1892.357846] dummy0: left promiscuous mode
[ 1892.357866] br0: port 1(dummy0) entered disabled state