[ 1633.977416] br0: port 1(dummy0) entered blocking state
[ 1633.977481] br0: port 1(dummy0) entered disabled state
[ 1633.977552] dummy0: entered allmulticast mode
[ 1633.977640] dummy0: entered promiscuous mode
[ 1633.980520] br0: port 1(dummy0) entered blocking state
[ 1633.980551] br0: port 1(dummy0) entered forwarding state
[ 1634.176081] dummy0: left allmulticast mode
[ 1634.176121] dummy0: left promiscuous mode
[ 1634.176147] br0: port 1(dummy0) entered disabled state