[ 1664.115753] br0: port 1(dummy0) entered blocking state
[ 1664.115792] br0: port 1(dummy0) entered disabled state
[ 1664.115831] dummy0: entered allmulticast mode
[ 1664.115879] dummy0: entered promiscuous mode
[ 1664.119321] br0: port 1(dummy0) entered blocking state
[ 1664.119391] br0: port 1(dummy0) entered forwarding state
[ 1664.333996] dummy0: left allmulticast mode
[ 1664.334035] dummy0: left promiscuous mode
[ 1664.334063] br0: port 1(dummy0) entered disabled state