[ 1623.008434] br0: port 1(dummy0) entered blocking state
[ 1623.008512] br0: port 1(dummy0) entered disabled state
[ 1623.008575] dummy0: entered allmulticast mode
[ 1623.008661] dummy0: entered promiscuous mode
[ 1623.011177] br0: port 1(dummy0) entered blocking state
[ 1623.011214] br0: port 1(dummy0) entered forwarding state
[ 1623.190681] dummy0: left allmulticast mode
[ 1623.190758] dummy0: left promiscuous mode
[ 1623.190854] br0: port 1(dummy0) entered disabled state