[ 1851.710938] br0: port 1(dummy0) entered blocking state
[ 1851.710970] br0: port 1(dummy0) entered disabled state
[ 1851.710993] dummy0: entered allmulticast mode
[ 1851.711033] dummy0: entered promiscuous mode
[ 1851.714588] br0: port 1(dummy0) entered blocking state
[ 1851.714636] br0: port 1(dummy0) entered forwarding state
[ 1851.983374] dummy0: left allmulticast mode
[ 1851.983406] dummy0: left promiscuous mode
[ 1851.983432] br0: port 1(dummy0) entered disabled state