[ 1892.402432] br0: port 1(dummy0) entered blocking state
[ 1892.402480] br0: port 1(dummy0) entered disabled state
[ 1892.402517] dummy0: entered allmulticast mode
[ 1892.402573] dummy0: entered promiscuous mode
[ 1892.406300] br0: port 1(dummy0) entered blocking state
[ 1892.406335] br0: port 1(dummy0) entered forwarding state
[ 1892.689038] dummy0: left allmulticast mode
[ 1892.689075] dummy0: left promiscuous mode
[ 1892.689109] br0: port 1(dummy0) entered disabled state