[ 1899.762267] br0: port 1(dummy0) entered blocking state
[ 1899.762305] br0: port 1(dummy0) entered disabled state
[ 1899.762349] dummy0: entered allmulticast mode
[ 1899.762396] dummy0: entered promiscuous mode
[ 1899.765705] br0: port 1(dummy0) entered blocking state
[ 1899.765738] br0: port 1(dummy0) entered forwarding state
[ 1900.001883] dummy0: left allmulticast mode
[ 1900.001925] dummy0: left promiscuous mode
[ 1900.002014] br0: port 1(dummy0) entered disabled state