[ 1918.618681] br0: port 1(dummy0) entered blocking state
[ 1918.618720] br0: port 1(dummy0) entered disabled state
[ 1918.618761] dummy0: entered allmulticast mode
[ 1918.618810] dummy0: entered promiscuous mode
[ 1918.622399] br0: port 1(dummy0) entered blocking state
[ 1918.622463] br0: port 1(dummy0) entered forwarding state
[ 1918.894171] dummy0: left allmulticast mode
[ 1918.894207] dummy0: left promiscuous mode
[ 1918.894267] br0: port 1(dummy0) entered disabled state