[ 1677.728372] br0: port 1(dummy0) entered blocking state
[ 1677.728449] br0: port 1(dummy0) entered disabled state
[ 1677.728516] dummy0: entered allmulticast mode
[ 1677.728598] dummy0: entered promiscuous mode
[ 1677.731169] br0: port 1(dummy0) entered blocking state
[ 1677.731205] br0: port 1(dummy0) entered forwarding state
[ 1677.929839] dummy0: left allmulticast mode
[ 1677.929876] dummy0: left promiscuous mode
[ 1677.929908] br0: port 1(dummy0) entered disabled state