Re: Objection to draft-ietf-6man-rfc4291bis-07.txt

Dan Lüdtke <mail@danrl.com> Wed, 01 March 2017 11:23 UTC

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Subject: Re: Objection to draft-ietf-6man-rfc4291bis-07.txt
From: =?utf-8?Q?Dan_L=C3=BCdtke?= <mail@danrl.com>
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Date: Wed, 1 Mar 2017 12:23:27 +0100
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References: <20170223134026.GI5069@gir.theapt.org> <9277BC0B-04F3-4FC1-901E-F83A8F0E02D7@google.com> <58AF6429.70809@foobar.org> <902276E9-0521-4D4E-A42B-C45E64763896@google.com> <58AF726A.3040302@foobar.org> <F7C230DE-4759-4B78-ABF2-6799F85B3C62@google.com> <58B014F6.2040400@foobar.org> <6DA95097-8730-4353-A0C9-3EB4719EA891@google.com> <CAN-Dau0s04c=RV0Y8AGaxBPFui41TWPTB+5o0K2Lj-iah0An1w@mail.gmail.com> <CAL9jLaYirty22iGiEjEaYq3_KA1FZhxBTOBWuFOXQ9C-WPd5xQ@mail.gmail.com> <CAN-Dau0n6oFm538XdJOcuO1yg92BCDD3mBu5YfBVm_+g-gtcKA@mail.gmail.com> <CAL9jLaYO=uYgVfSZ0SoSe0SujJ1xgwEKE8WLzo_keJHywgXTtg@mail.gmail.com> <CAN-Dau1vJV5O_Ythp6THkAu4-YZXV82Upny1V+ybbjCVZQQX=A@mail.gmail.com> <27cce319-18ac-5c0e-3497-af92344f0062@gmail.com> <de4988be-6031-08d9-84ce-21c3fa4f9bc9@gmail.com> <98401ef7-cf41-b4a0-4d11-a7d840181bd0@gmail.com> <1047f5fc-ae40-be52-6bab-27f31fe5e045@gmail.com> <9a94feac-8d59-b153-d41c-04fc371e4db4@gmail.com> <CAO42Z2z7v4gDk91b6Of-1sczV88m3B9kzn0MeJU_VBJ416k6Ww@mail.gmail.com> <ae35b45a-0398-840f-fc0d-1f64dd2fcc58@gmail.com>
To: Alexandre Petrescu <alexandre.petrescu@gmail.com>
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> On 28 Feb 2017, at 13:04, Alexandre Petrescu <alexandre.petrescu@gmail.com>; wrote:
> 
> Finally, there is no advice of what bits to put between fe80:: and a
> 64bit the Interface ID - zeros or ones?  linux says it's a fe80::/64 and
> IIRC BSD says it's a fe80::/10.  The routing entries based on that can
> make for interop problems.

I think there is advice. As I understand, /10 is reserved but only /64 is specified.


RFC 4291 IP Version 6 Addressing Architecture
  2.5.6.  Link-Local IPv6 Unicast Addresses

     Link-Local addresses are for use on a single link.  Link-Local
     addresses have the following format:

     |   10     |
     |  bits    |         54 bits         |          64 bits           |
     +----------+-------------------------+----------------------------+
     |1111111010|           0             |       interface ID         |
     +----------+-------------------------+----------------------------+


Cheers,

Dan