I am the assigned Gen-ART reviewer for this draft. For background on Gen-ART, please see the FAQ at . Please resolve these comments along with any other Last Call comments you may receive. Document: draft-ietf-mpls-mldp-hsmp-04 Reviewer: Roni Even Review Date:2013–12-8 IETF LC End Date: 2013-12–10 IESG Telechat date:   Summary: This draft is ready for publication as an standard track RFC .     Major issues:   Minor issues:   1.   In section 3.1 last paragraph  “ If the peer has not advertised the corresponding capability, then label messages using the HSMP FEC Element SHOULD NOT be sent to the  peer . “. Why use a SHOULD NOT and not MUSR NOT       Nits/editorial comments: In section 2 for PTP IEEE1588 need a reference. There is a reference in the reference section but it is not used. Also the tictoc reference is not used.