[ 1832.708957] br0: port 1(dummy0) entered blocking state
[ 1832.709035] br0: port 1(dummy0) entered disabled state
[ 1832.709103] dummy0: entered allmulticast mode
[ 1832.709193] dummy0: entered promiscuous mode
[ 1832.712711] br0: port 1(dummy0) entered blocking state
[ 1832.712749] br0: port 1(dummy0) entered forwarding state
[ 1832.969241] dummy0: left allmulticast mode
[ 1832.969271] dummy0: left promiscuous mode
[ 1832.969298] br0: port 1(dummy0) entered disabled state