Hi Rajesh, yes the bit reservation can be removed since we removed that flag.
Thanks for noticing that using Last Entry to identify the TLV start location is 
not stated explicitly. We can address that by adding a small update to section 
2.1.

Darren

From: ipv6 <[email protected]> on behalf of Rajesh M 
<[email protected]>
Date: Wednesday, March 13, 2019 at 1:42 AM
To: "Clarence Filsfils (cfilsfil)" <[email protected]>, "[email protected]" 
<[email protected]>, John Leddy <[email protected]>, 
"[email protected]" <[email protected]>
Cc: SPRING WG <[email protected]>, "[email protected]" <[email protected]>
Subject: draft-ietf-6man-segment-routing-header-16

Please find observations on draft-ietf-6man-segment-routing-header-16


  1.  Section 8.1 Segment Routing Header Flags Register why we need this bit 
for HMAC ? we should remove this section from this draft

Suggested Description Reference
Bit
-----------------------------------------------------
4         HMAC         This document


  1.  Better to mention Last Entry field usage apart from validation (to 
determine the starting location of the TLVs)

Thanks
Rajesh

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