[ 1916.357156] br0: port 1(dummy0) entered blocking state
[ 1916.357188] br0: port 1(dummy0) entered disabled state
[ 1916.357211] dummy0: entered allmulticast mode
[ 1916.357247] dummy0: entered promiscuous mode
[ 1916.360135] br0: port 1(dummy0) entered blocking state
[ 1916.360183] br0: port 1(dummy0) entered forwarding state
[ 1916.548936] dummy0: left allmulticast mode
[ 1916.548957] dummy0: left promiscuous mode
[ 1916.548973] br0: port 1(dummy0) entered disabled state