[ 1780.767518] br0: port 1(dummy0) entered blocking state
[ 1780.767561] br0: port 1(dummy0) entered disabled state
[ 1780.767605] dummy0: entered allmulticast mode
[ 1780.767661] dummy0: entered promiscuous mode
[ 1780.771137] br0: port 1(dummy0) entered blocking state
[ 1780.771198] br0: port 1(dummy0) entered forwarding state
[ 1781.034232] dummy0: left allmulticast mode
[ 1781.034304] dummy0: left promiscuous mode
[ 1781.034371] br0: port 1(dummy0) entered disabled state