[ 1709.943820] br0: port 1(dummy0) entered blocking state
[ 1709.943906] br0: port 1(dummy0) entered disabled state
[ 1709.943983] dummy0: entered allmulticast mode
[ 1709.944074] dummy0: entered promiscuous mode
[ 1709.948046] br0: port 1(dummy0) entered blocking state
[ 1709.948083] br0: port 1(dummy0) entered forwarding state
[ 1710.245247] dummy0: left allmulticast mode
[ 1710.245313] dummy0: left promiscuous mode
[ 1710.245379] br0: port 1(dummy0) entered disabled state