[ 1816.048571] br0: port 1(dummy0) entered blocking state
[ 1816.048620] br0: port 1(dummy0) entered disabled state
[ 1816.048669] dummy0: entered allmulticast mode
[ 1816.048725] dummy0: entered promiscuous mode
[ 1816.052391] br0: port 1(dummy0) entered blocking state
[ 1816.052433] br0: port 1(dummy0) entered forwarding state
[ 1816.294144] dummy0: left allmulticast mode
[ 1816.294217] dummy0: left promiscuous mode
[ 1816.294286] br0: port 1(dummy0) entered disabled state