[ 1778.588173] br0: port 1(dummy0) entered blocking state
[ 1778.588208] br0: port 1(dummy0) entered disabled state
[ 1778.588241] dummy0: entered allmulticast mode
[ 1778.588292] dummy0: entered promiscuous mode
[ 1778.591839] br0: port 1(dummy0) entered blocking state
[ 1778.591874] br0: port 1(dummy0) entered forwarding state
[ 1778.863355] dummy0: left allmulticast mode
[ 1778.863396] dummy0: left promiscuous mode
[ 1778.863483] br0: port 1(dummy0) entered disabled state