[ 1778.796381] br0: port 1(dummy0) entered blocking state
[ 1778.796427] br0: port 1(dummy0) entered disabled state
[ 1778.796468] dummy0: entered allmulticast mode
[ 1778.796523] dummy0: entered promiscuous mode
[ 1778.799882] br0: port 1(dummy0) entered blocking state
[ 1778.799948] br0: port 1(dummy0) entered forwarding state
[ 1779.031069] dummy0: left allmulticast mode
[ 1779.031104] dummy0: left promiscuous mode
[ 1779.031133] br0: port 1(dummy0) entered disabled state