[ 1852.898000] br0: port 1(dummy0) entered blocking state
[ 1852.898041] br0: port 1(dummy0) entered disabled state
[ 1852.898078] dummy0: entered allmulticast mode
[ 1852.898130] dummy0: entered promiscuous mode
[ 1852.901669] br0: port 1(dummy0) entered blocking state
[ 1852.901699] br0: port 1(dummy0) entered forwarding state
[ 1853.169240] dummy0: left allmulticast mode
[ 1853.169272] dummy0: left promiscuous mode
[ 1853.169344] br0: port 1(dummy0) entered disabled state