%% You should probably cite rfc6720 instead of this I-D. @techreport{ietf-mpls-ldp-gtsm-07, number = {draft-ietf-mpls-ldp-gtsm-07}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-ietf-mpls-ldp-gtsm/07/}, author = {Carlos Pignataro and Rajiv Asati}, title = {{The Generalized TTL Security Mechanism (GTSM) for Label Distribution Protocol (LDP)}}, pagetotal = 9, year = 2012, month = may, day = 29, abstract = {The Generalized TTL Security Mechanism (GTSM) describes a generalized use of a packet's Time to Live (TTL) (IPv4) or Hop Limit (IPv6) to verify that the packet was sourced by a node on a connected link, thereby protecting the router's IP control-plane from CPU utilization based attacks. This technique improves security and is used by many protocols. This document defines the GTSM use for the Label Distribution Protocol (LDP). This specification uses a bit reserved in RFC 5036 and therefore updates RFC 5036.}, }