[ 1742.979838] br0: port 1(dummy0) entered blocking state
[ 1742.979887] br0: port 1(dummy0) entered disabled state
[ 1742.979919] dummy0: entered allmulticast mode
[ 1742.979968] dummy0: entered promiscuous mode
[ 1742.982831] br0: port 1(dummy0) entered blocking state
[ 1742.982899] br0: port 1(dummy0) entered forwarding state
[ 1743.167545] dummy0: left allmulticast mode
[ 1743.167576] dummy0: left promiscuous mode
[ 1743.167613] br0: port 1(dummy0) entered disabled state