[ 1866.548326] br0: port 1(dummy0) entered blocking state
[ 1866.548400] br0: port 1(dummy0) entered disabled state
[ 1866.548469] dummy0: entered allmulticast mode
[ 1866.548556] dummy0: entered promiscuous mode
[ 1866.552160] br0: port 1(dummy0) entered blocking state
[ 1866.552194] br0: port 1(dummy0) entered forwarding state
[ 1866.823047] dummy0: left allmulticast mode
[ 1866.823078] dummy0: left promiscuous mode
[ 1866.823116] br0: port 1(dummy0) entered disabled state