[ 1701.596295] br0: port 1(dummy0) entered blocking state
[ 1701.596346] br0: port 1(dummy0) entered disabled state
[ 1701.596382] dummy0: entered allmulticast mode
[ 1701.596430] dummy0: entered promiscuous mode
[ 1701.599247] br0: port 1(dummy0) entered blocking state
[ 1701.599308] br0: port 1(dummy0) entered forwarding state
[ 1701.777108] dummy0: left allmulticast mode
[ 1701.777150] dummy0: left promiscuous mode
[ 1701.777211] br0: port 1(dummy0) entered disabled state