[ 1802.765200] br0: port 1(dummy0) entered blocking state
[ 1802.765243] br0: port 1(dummy0) entered disabled state
[ 1802.765277] dummy0: entered allmulticast mode
[ 1802.765332] dummy0: entered promiscuous mode
[ 1802.768578] br0: port 1(dummy0) entered blocking state
[ 1802.768608] br0: port 1(dummy0) entered forwarding state
[ 1802.982485] dummy0: left allmulticast mode
[ 1802.982517] dummy0: left promiscuous mode
[ 1802.982547] br0: port 1(dummy0) entered disabled state