[ 1773.047077] br0: port 1(dummy0) entered blocking state
[ 1773.047107] br0: port 1(dummy0) entered disabled state
[ 1773.047191] dummy0: entered allmulticast mode
[ 1773.047265] dummy0: entered promiscuous mode
[ 1773.051083] br0: port 1(dummy0) entered blocking state
[ 1773.051105] br0: port 1(dummy0) entered forwarding state
[ 1773.311331] dummy0: left allmulticast mode
[ 1773.311353] dummy0: left promiscuous mode
[ 1773.311371] br0: port 1(dummy0) entered disabled state