This read-write field sets the disposition applied to frames sent to the reserved multicast address 01:80:C2:00:00:0D at the flow point using this CPD profile. As with the other reserved-block MAC dispositions in the profile, the value chosen controls whether such control frames are processed locally, dropped, or passed through the carrier network untouched. For example, an operator hardening a UNI flow point against unexpected control traffic from a customer device might set this disposition to discard rather than peer.