[ 1910.268240] br0: port 1(dummy0) entered blocking state
[ 1910.268284] br0: port 1(dummy0) entered disabled state
[ 1910.268316] dummy0: entered allmulticast mode
[ 1910.268369] dummy0: entered promiscuous mode
[ 1910.271926] br0: port 1(dummy0) entered blocking state
[ 1910.271959] br0: port 1(dummy0) entered forwarding state
[ 1910.544860] dummy0: left allmulticast mode
[ 1910.544896] dummy0: left promiscuous mode
[ 1910.544924] br0: port 1(dummy0) entered disabled state