[ 1730.907317] br0: port 1(dummy0) entered blocking state
[ 1730.907365] br0: port 1(dummy0) entered disabled state
[ 1730.907404] dummy0: entered allmulticast mode
[ 1730.907457] dummy0: entered promiscuous mode
[ 1730.910197] br0: port 1(dummy0) entered blocking state
[ 1730.910261] br0: port 1(dummy0) entered forwarding state
[ 1731.089564] dummy0: left allmulticast mode
[ 1731.089596] dummy0: left promiscuous mode
[ 1731.089630] br0: port 1(dummy0) entered disabled state