[ 1745.313542] br0: port 1(dummy0) entered blocking state
[ 1745.313628] br0: port 1(dummy0) entered disabled state
[ 1745.313693] dummy0: entered allmulticast mode
[ 1745.313781] dummy0: entered promiscuous mode
[ 1745.317308] br0: port 1(dummy0) entered blocking state
[ 1745.317340] br0: port 1(dummy0) entered forwarding state
[ 1745.572669] dummy0: left allmulticast mode
[ 1745.572709] dummy0: left promiscuous mode
[ 1745.572738] br0: port 1(dummy0) entered disabled state