[ 1778.113836] br0: port 1(dummy0) entered blocking state
[ 1778.113872] br0: port 1(dummy0) entered disabled state
[ 1778.113910] dummy0: entered allmulticast mode
[ 1778.113966] dummy0: entered promiscuous mode
[ 1778.116736] br0: port 1(dummy0) entered blocking state
[ 1778.116798] br0: port 1(dummy0) entered forwarding state
[ 1778.312019] dummy0: left allmulticast mode
[ 1778.312082] dummy0: left promiscuous mode
[ 1778.312142] br0: port 1(dummy0) entered disabled state