[ 1836.817104] br0: port 1(dummy0) entered blocking state
[ 1836.817141] br0: port 1(dummy0) entered disabled state
[ 1836.817179] dummy0: entered allmulticast mode
[ 1836.817231] dummy0: entered promiscuous mode
[ 1836.820712] br0: port 1(dummy0) entered blocking state
[ 1836.820774] br0: port 1(dummy0) entered forwarding state
[ 1837.076073] dummy0: left allmulticast mode
[ 1837.076113] dummy0: left promiscuous mode
[ 1837.076143] br0: port 1(dummy0) entered disabled state