[ 1913.263288] br0: port 1(dummy0) entered blocking state
[ 1913.263342] br0: port 1(dummy0) entered disabled state
[ 1913.263387] dummy0: entered allmulticast mode
[ 1913.263449] dummy0: entered promiscuous mode
[ 1913.267103] br0: port 1(dummy0) entered blocking state
[ 1913.267143] br0: port 1(dummy0) entered forwarding state
[ 1913.550029] dummy0: left allmulticast mode
[ 1913.550066] dummy0: left promiscuous mode
[ 1913.550169] br0: port 1(dummy0) entered disabled state