[ 1801.880421] br0: port 1(dummy0) entered blocking state
[ 1801.880495] br0: port 1(dummy0) entered disabled state
[ 1801.880564] dummy0: entered allmulticast mode
[ 1801.880658] dummy0: entered promiscuous mode
[ 1801.883958] br0: port 1(dummy0) entered blocking state
[ 1801.883994] br0: port 1(dummy0) entered forwarding state
[ 1802.107123] dummy0: left allmulticast mode
[ 1802.107155] dummy0: left promiscuous mode
[ 1802.107193] br0: port 1(dummy0) entered disabled state