[ 1893.530341] br0: port 1(dummy0) entered blocking state
[ 1893.530418] br0: port 1(dummy0) entered disabled state
[ 1893.530502] dummy0: entered allmulticast mode
[ 1893.530588] dummy0: entered promiscuous mode
[ 1893.534098] br0: port 1(dummy0) entered blocking state
[ 1893.534131] br0: port 1(dummy0) entered forwarding state
[ 1893.801950] dummy0: left allmulticast mode
[ 1893.801993] dummy0: left promiscuous mode
[ 1893.802023] br0: port 1(dummy0) entered disabled state