[ 1799.231930] br0: port 1(dummy0) entered blocking state
[ 1799.231974] br0: port 1(dummy0) entered disabled state
[ 1799.232005] dummy0: entered allmulticast mode
[ 1799.232059] dummy0: entered promiscuous mode
[ 1799.235717] br0: port 1(dummy0) entered blocking state
[ 1799.235782] br0: port 1(dummy0) entered forwarding state
[ 1799.499370] dummy0: left allmulticast mode
[ 1799.499407] dummy0: left promiscuous mode
[ 1799.499439] br0: port 1(dummy0) entered disabled state