[ 1846.349305] br0: port 1(dummy0) entered blocking state
[ 1846.349355] br0: port 1(dummy0) entered disabled state
[ 1846.349404] dummy0: entered allmulticast mode
[ 1846.349481] dummy0: entered promiscuous mode
[ 1846.353915] br0: port 1(dummy0) entered blocking state
[ 1846.353995] br0: port 1(dummy0) entered forwarding state
[ 1846.702054] dummy0: left allmulticast mode
[ 1846.702105] dummy0: left promiscuous mode
[ 1846.702143] br0: port 1(dummy0) entered disabled state