[ 1880.563358][ T5774] br0: port 1(dummy0) entered blocking state
[ 1880.563560][ T5774] br0: port 1(dummy0) entered disabled state
[ 1880.563729][ T5774] dummy0: entered allmulticast mode
[ 1880.565253][ T5774] dummy0: entered promiscuous mode
[ 1880.589426][ T5775] br0: port 1(dummy0) entered blocking state
[ 1880.589659][ T5775] br0: port 1(dummy0) entered forwarding state
[ 1882.429737][   T69] dummy0: left allmulticast mode
[ 1882.430013][   T69] dummy0: left promiscuous mode
[ 1882.430215][   T69] br0: port 1(dummy0) entered disabled state