[ 1664.214624] br0: port 1(dummy0) entered blocking state
[ 1664.214675] br0: port 1(dummy0) entered disabled state
[ 1664.214715] dummy0: entered allmulticast mode
[ 1664.214781] dummy0: entered promiscuous mode
[ 1664.218254] br0: port 1(dummy0) entered blocking state
[ 1664.218291] br0: port 1(dummy0) entered forwarding state
[ 1664.460382] dummy0: left allmulticast mode
[ 1664.460469] dummy0: left promiscuous mode
[ 1664.460574] br0: port 1(dummy0) entered disabled state