I have reviewed this document as part of the security directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written primarily for the benefit of the security area directors. Document editors and WG chairs should treat these comments just like any other last call comments. This draft specifies multipath support in environments where Entropy Labels (ELs) are used so that Label Switched Path (LSP) Ping and Traceroute operations are possible. The security considerations section does exist and refers to the security considerations in base specifications for applicability. The sections continues that there are no new security considerations with this specification. I agree with this assertion. General comments: None. Editorial comments: s/initiator to not be able to/initiator that is unable to/ "LSPs stitched together": not for sure what "stitched" means and wasn't defined in the Terminology section. Shawn. --