This object enables or disables penultimate-hop-popping (PHP) for RSVP-signaled label-switched paths, where the second-to-last router in the path removes the MPLS label before forwarding to the final destination. Administrators typically leave this enabled, as it defaults to true, since it saves the egress router from an extra label lookup. For example, an admin troubleshooting unexpected labeled traffic arriving at the tunnel's endpoint router would check whether this has been disabled, which would explain why the label wasn't popped a hop earlier as normally expected.