[ 1899.124100] br0: port 1(dummy0) entered blocking state
[ 1899.124143] br0: port 1(dummy0) entered disabled state
[ 1899.124179] dummy0: entered allmulticast mode
[ 1899.124233] dummy0: entered promiscuous mode
[ 1899.127036] br0: port 1(dummy0) entered blocking state
[ 1899.127101] br0: port 1(dummy0) entered forwarding state
[ 1899.324779] dummy0: left allmulticast mode
[ 1899.324814] dummy0: left promiscuous mode
[ 1899.324849] br0: port 1(dummy0) entered disabled state