[ 1742.163872] br0: port 1(dummy0) entered blocking state
[ 1742.163903] br0: port 1(dummy0) entered disabled state
[ 1742.163994] dummy0: entered allmulticast mode
[ 1742.164070] dummy0: entered promiscuous mode
[ 1742.167423] br0: port 1(dummy0) entered blocking state
[ 1742.167444] br0: port 1(dummy0) entered forwarding state
[ 1742.380453] dummy0: left allmulticast mode
[ 1742.380516] dummy0: left promiscuous mode
[ 1742.380576] br0: port 1(dummy0) entered disabled state