[ 1892.949215] br0: port 1(dummy0) entered blocking state
[ 1892.949251] br0: port 1(dummy0) entered disabled state
[ 1892.949287] dummy0: entered allmulticast mode
[ 1892.949335] dummy0: entered promiscuous mode
[ 1892.952943] br0: port 1(dummy0) entered blocking state
[ 1892.953006] br0: port 1(dummy0) entered forwarding state
[ 1893.206351] dummy0: left allmulticast mode
[ 1893.206438] dummy0: left promiscuous mode
[ 1893.206498] br0: port 1(dummy0) entered disabled state