[ 1963.419067] br0: port 1(dummy0) entered blocking state
[ 1963.419108] br0: port 1(dummy0) entered disabled state
[ 1963.419144] dummy0: entered allmulticast mode
[ 1963.419197] dummy0: entered promiscuous mode
[ 1963.422749] br0: port 1(dummy0) entered blocking state
[ 1963.422782] br0: port 1(dummy0) entered forwarding state
[ 1963.672427] dummy0: left allmulticast mode
[ 1963.672465] dummy0: left promiscuous mode
[ 1963.672495] br0: port 1(dummy0) entered disabled state