[ 1797.986471] br0: port 1(dummy0) entered blocking state
[ 1797.986549] br0: port 1(dummy0) entered disabled state
[ 1797.986618] dummy0: entered allmulticast mode
[ 1797.986710] dummy0: entered promiscuous mode
[ 1797.990164] br0: port 1(dummy0) entered blocking state
[ 1797.990200] br0: port 1(dummy0) entered forwarding state
[ 1798.208698] dummy0: left allmulticast mode
[ 1798.208743] dummy0: left promiscuous mode
[ 1798.208774] br0: port 1(dummy0) entered disabled state