[ 1656.449500] br0: port 1(dummy0) entered blocking state
[ 1656.449546] br0: port 1(dummy0) entered disabled state
[ 1656.449576] dummy0: entered allmulticast mode
[ 1656.449626] dummy0: entered promiscuous mode
[ 1656.452055] br0: port 1(dummy0) entered blocking state
[ 1656.452089] br0: port 1(dummy0) entered forwarding state
[ 1656.634006] dummy0: left allmulticast mode
[ 1656.634035] dummy0: left promiscuous mode
[ 1656.634064] br0: port 1(dummy0) entered disabled state