[ 1666.023209] br0: port 1(dummy0) entered blocking state
[ 1666.023284] br0: port 1(dummy0) entered disabled state
[ 1666.023347] dummy0: entered allmulticast mode
[ 1666.023444] dummy0: entered promiscuous mode
[ 1666.025892] br0: port 1(dummy0) entered blocking state
[ 1666.025925] br0: port 1(dummy0) entered forwarding state
[ 1666.199083] dummy0: left allmulticast mode
[ 1666.199151] dummy0: left promiscuous mode
[ 1666.199218] br0: port 1(dummy0) entered disabled state