[ 1733.671293] br0: port 1(dummy0) entered blocking state
[ 1733.671337] br0: port 1(dummy0) entered disabled state
[ 1733.671373] dummy0: entered allmulticast mode
[ 1733.671419] dummy0: entered promiscuous mode
[ 1733.674791] br0: port 1(dummy0) entered blocking state
[ 1733.674824] br0: port 1(dummy0) entered forwarding state
[ 1733.908261] dummy0: left allmulticast mode
[ 1733.908364] dummy0: left promiscuous mode
[ 1733.908429] br0: port 1(dummy0) entered disabled state