[ 1665.151569] br0: port 1(dummy0) entered blocking state
[ 1665.151636] br0: port 1(dummy0) entered disabled state
[ 1665.151698] dummy0: entered allmulticast mode
[ 1665.151778] dummy0: entered promiscuous mode
[ 1665.154274] br0: port 1(dummy0) entered blocking state
[ 1665.154306] br0: port 1(dummy0) entered forwarding state
[ 1665.319162] dummy0: left allmulticast mode
[ 1665.319190] dummy0: left promiscuous mode
[ 1665.319216] br0: port 1(dummy0) entered disabled state