[ 1819.896493] br0: port 1(dummy0) entered blocking state
[ 1819.896571] br0: port 1(dummy0) entered disabled state
[ 1819.896637] dummy0: entered allmulticast mode
[ 1819.896720] dummy0: entered promiscuous mode
[ 1819.900280] br0: port 1(dummy0) entered blocking state
[ 1819.900313] br0: port 1(dummy0) entered forwarding state
[ 1820.147472] dummy0: left allmulticast mode
[ 1820.147508] dummy0: left promiscuous mode
[ 1820.147535] br0: port 1(dummy0) entered disabled state