[ 1832.214066] br0: port 1(dummy0) entered blocking state
[ 1832.214149] br0: port 1(dummy0) entered disabled state
[ 1832.214220] dummy0: entered allmulticast mode
[ 1832.214309] dummy0: entered promiscuous mode
[ 1832.218184] br0: port 1(dummy0) entered blocking state
[ 1832.218218] br0: port 1(dummy0) entered forwarding state
[ 1832.499935] dummy0: left allmulticast mode
[ 1832.499980] dummy0: left promiscuous mode
[ 1832.500040] br0: port 1(dummy0) entered disabled state