Re: [v6ops] new draft: draft-taylor-v6ops-fragdrop
Ole Trøan <otroan@employees.org> Thu, 08 November 2012 19:06 UTC
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From: Ole Trøan <otroan@employees.org>
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Date: Thu, 08 Nov 2012 14:05:59 -0500
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References: <CAKD1Yr13cNspdWvTaXxHt4R_8UB-CKeA4nq8_XWrkbFGCgW7Gg@mail.gmail.com> <5090DECF.3050100@gmail.com> <CAKD1Yr1dUy-f78A2+kfA7NjpzD0WQRT8iwqGYAm5A=Erodpn-A@mail.gmail.com> <20121031.122110.41655699.sthaug@nethelp.no> <50910E41.2030100@gmail.com> <CAKD1Yr0mTTcVeq+Qf0fLv3UCBP_90QmStkK3Ha4tDdm3FxJjVA@mail.gmail.com> <50915F86.7050304@gmail.com> <509165B8.404@si6networks.com> <509169C2.9040208@isi.edu> <50916F21.6030303@si6networks.com> <509174F1.8080809@isi.edu> <50924264.7040300@gmail.com> <5092C0BA.4090000@isi.edu> <5092C846.5090009@gmail.com> <5092D5B1.2000201@isi.edu> <509381B3.9040602@gmail.com> <5093CF61.9090301@isi.edu> <509A7922.9080000@gmail.com> <509A8993.4000803@isi.edu>
To: Joe Touch <touch@isi.edu>
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Cc: Fernando Gont <fgont@si6networks.com>, v6ops@ietf.org
Subject: Re: [v6ops] new draft: draft-taylor-v6ops-fragdrop
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Joe, > There's remains other problematic language in 2460, however: > > Each extension header should occur at most once, except for the > Destination Options header which should occur at most twice (once > before a Routing header and once before the upper-layer header). > > So it still seems open to have more than one HBH header, which certainly complicates things even though they'd be clearly marked. I don't see how you can read that to imply you can have more than one Hop-by-Hop extension header. my reading (and what I think the _intention_ of the text was) is that there can only be one Hop-By-Hop extension header, and that the HBH header must be the first extension header in the chain. this way routers only need to check the Next Header field for the value of 0. cheers, Ole
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- Re: [v6ops] new draft: draft-taylor-v6ops-fragdrop Nick Hilliard
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