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Deprecating the Use of Router Alert in LSP Ping

Document Type Replaced Internet-Draft (mpls WG)
Expired & archived
Authors Kireeti Kompella , Ron Bonica , Greg Mirsky
Last updated 2022-12-10
Replaced by draft-ietf-mpls-lspping-norao
RFC stream Internet Engineering Task Force (IETF)
Intended RFC status (None)
Additional resources Mailing list discussion
Stream WG state Candidate for WG Adoption
Document shepherd Loa Andersson
IESG IESG state Replaced by draft-ietf-mpls-lspping-norao
Consensus boilerplate Unknown
Telechat date (None)
Responsible AD (None)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft is available in these formats:


LSP ping messages (RFC 8029) are encapsulated in IP headers that include a Router Alert Option (RAO). The rationale for including an RAO is questionable. Furthermore, RFC6398 identifies security vulnerabilities associated with the RAO. Therefore, this document removes the RAO from LSP ping message encapsulations. It updates RFCs 7506 and 8029. This document also recommends the use of an IPv6 loopback address (:::1/128) and discourages the use of an IPv4 loopback address mapped to IPv6.


Kireeti Kompella
Ron Bonica
Greg Mirsky

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)