If RFC 2711 already defines a Router Alert Option to use, why do we need a new option in the Hop by Hop option for roll as specified by this document? I suggest we just use a new code value for roll with RFC 2711 and be done with it. See section 2.1 of RFC 2711. Here is a list of what IPv6 protocols already use the Router Alert Option.
http://www.iana.org/assignments/ipv6-routeralert-values/ipv6-routeralert -values.xhtml RFC 2711 also already lists the security concerns with use of the Router Alert Option. This document is repeating the same security concern. Further one should look at http://tools.ietf.org/html/draft-rahman-rtg-router-alert-considerations- 03 Hemant -----Original Message----- From: ipv6-boun...@ietf.org [mailto:ipv6-boun...@ietf.org] On Behalf Of Philip Levis Sent: Saturday, May 29, 2010 1:08 PM To: JP Vasseur Cc: ipv6@ietf.org Subject: Re: New Version Notification for draft-hui-6man-rpl-option-00.txt On May 17, 2010, at 6:18 AM, JP Vasseur wrote: > Dear all, > > This is to re-activate our discussion during the last IETF > meetings. Feed-back are very welcome since we would like to move > forward as soon as possible, this proposed extension is indeed > critical for RPL to move forward. > > Many Thanks. > > JP and Jonathan. I strongly support this draft; it is a make-or-break extension, without which RPL will not be an effective protocol. There is extensive experimental evidence from many LLN deployments and testbeds that the mechanisms it enables (datapath validation) are critical. I think Jonathan has done an excellent job of narrowly defining what the option can do: containing it within a RPL domain addresses most of the major concerns with hop-by-hop options. Phil -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 -------------------------------------------------------------------- -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------