Hi Hemant, 2011/10/20 Hemant Singh (shemant) <shem...@cisco.com>: > Washam, > > -----Original Message----- > From: Washam Fan [mailto:washam....@gmail.com] > Sent: Thursday, October 20, 2011 9:47 AM > To: Hemant Singh (shemant) > Cc: Lorenzo Colitti; Erik Kline; v6...@ietf.org; > draft-asati-v6ops-dad-loopb...@tools.ietf.org; ipv6@ietf.org > Subject: Re: [v6ops] new draft: draft-asati-v6ops-dad-loopback > >>Since NS(DAD) traverse the same link, couldn't we just use src MAC of > the received NS(DAD) to identify if the NS is the one sent by the > interface earlier? > > No. Two nodes could almost simultaneously issue a NS(DAD) and both the > nodes have the same mac-address and thus the situation is a DAD failure > and not a looped back NS(DAD).
Good catch. Thanks. washam > I use the term of NS(DAD) to denote a NS > issue for the purpose of DAD where the NS has a unspecified source > address. That is why a nonce is needed and specified in a completed > algorithm to detect looped back NS(DAD) messages in > > http://tools.ietf.org/html/draft-hsingh-6man-enhanced-dad-01 > > Hemant > -------------------------------------------------------------------- IETF IPv6 working group mailing list ipv6@ietf.org Administrative Requests: https://www.ietf.org/mailman/listinfo/ipv6 --------------------------------------------------------------------
