[ 1773.281507] br0: port 1(dummy0) entered blocking state
[ 1773.281554] br0: port 1(dummy0) entered disabled state
[ 1773.281586] dummy0: entered allmulticast mode
[ 1773.281645] dummy0: entered promiscuous mode
[ 1773.284218] br0: port 1(dummy0) entered blocking state
[ 1773.284279] br0: port 1(dummy0) entered forwarding state
[ 1773.480063] dummy0: left allmulticast mode
[ 1773.480098] dummy0: left promiscuous mode
[ 1773.480155] br0: port 1(dummy0) entered disabled state