[ 1847.394982][ T6537] br0: port 1(dummy0) entered blocking state
[ 1847.395186][ T6537] br0: port 1(dummy0) entered disabled state
[ 1847.395343][ T6537] dummy0: entered allmulticast mode
[ 1847.396803][ T6537] dummy0: entered promiscuous mode
[ 1847.433114][ T6538] br0: port 1(dummy0) entered blocking state
[ 1847.433543][ T6538] br0: port 1(dummy0) entered forwarding state
[ 1849.428900][   T12] dummy0: left allmulticast mode
[ 1849.429645][   T12] dummy0: left promiscuous mode
[ 1849.429877][   T12] br0: port 1(dummy0) entered disabled state