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'.