Description: The value of the object sdpBindMacPinning specifies whether or not MAC address pinning is active on this SDP bind (mesh or spoke). Setting the value to enable disables re-learning of MAC addresses on other SAPs or SDPs within the same VPLS; the MAC address will hence remain attached to the SDP Bind for the duration of its age-timer. This object has effect only for MAC addresses learned via the normal MAC learning process, and not for entries learned via DHCP. The value will be set by default to disabled. However for a spoke SDP that belongs to a residential SHG, the value is set to enabled by the system, and cannot be altered by the operator. This object applies to spoke-SDP associated with the service with svcType set to 'tls'.