[ 1770.541082] br0: port 1(dummy0) entered blocking state
[ 1770.541120] br0: port 1(dummy0) entered disabled state
[ 1770.541152] dummy0: entered allmulticast mode
[ 1770.541201] dummy0: entered promiscuous mode
[ 1770.544052] br0: port 1(dummy0) entered blocking state
[ 1770.544088] br0: port 1(dummy0) entered forwarding state
[ 1770.730792] dummy0: left allmulticast mode
[ 1770.730825] dummy0: left promiscuous mode
[ 1770.730852] br0: port 1(dummy0) entered disabled state