[ 1752.832372] br0: port 1(dummy0) entered blocking state
[ 1752.832409] br0: port 1(dummy0) entered disabled state
[ 1752.832442] dummy0: entered allmulticast mode
[ 1752.832489] dummy0: entered promiscuous mode
[ 1752.834965] br0: port 1(dummy0) entered blocking state
[ 1752.835026] br0: port 1(dummy0) entered forwarding state
[ 1753.009752] dummy0: left allmulticast mode
[ 1753.009813] dummy0: left promiscuous mode
[ 1753.009872] br0: port 1(dummy0) entered disabled state