[ 1674.144556] br0: port 1(dummy0) entered blocking state
[ 1674.144608] br0: port 1(dummy0) entered disabled state
[ 1674.144639] dummy0: entered allmulticast mode
[ 1674.144687] dummy0: entered promiscuous mode
[ 1674.147160] br0: port 1(dummy0) entered blocking state
[ 1674.147194] br0: port 1(dummy0) entered forwarding state
[ 1674.327361] dummy0: left allmulticast mode
[ 1674.327394] dummy0: left promiscuous mode
[ 1674.327426] br0: port 1(dummy0) entered disabled state