Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt> (IP Version 6 Addressing Architecture) to Internet Standard

Alexandre Petrescu <alexandre.petrescu@gmail.com> Fri, 17 February 2017 10:39 UTC

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Subject: Re: Last Call: <draft-ietf-6man-rfc4291bis-07.txt> (IP Version 6 Addressing Architecture) to Internet Standard
To: ipv6@ietf.org
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From: Alexandre Petrescu <alexandre.petrescu@gmail.com>
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Date: Fri, 17 Feb 2017 11:39:43 +0100
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Le 17/02/2017 à 08:44, otroan@employees.org a écrit :
> James,
>
> 4291:
>    For all unicast addresses, except those that start with the binary
>    value 000, Interface IDs are required to be 64 bits long and to be
>    constructed in Modified EUI-64 format.
>
> 4291bis:
>    IPv6 unicast routing is based on prefixes of any valid length up to
>    128 [BCP198].  For example, [RFC6164] standardises 127 bit prefixes
>    on inter-router point-to-point links.  However, the Interface ID of
>    all unicast addresses, except those that start with the binary value
>    000, is required to be 64 bits long.  The rationale for the 64 bit
>    boundary in IPv6 addresses can be found in [RFC7421]
>
> Proposal:
>    IPv6 unicast routing is based on prefixes of any valid length up to
>   128 bits [BCP198]. However, as explained in [RFC7421], the Interface ID
>    of unicast addresses is generally required to be 64 bits in length, with
>    exceptions only provided in special cases where expressly recognised
>    in IETF standards track documents.
>
> I think that's a good proposal.
> Perhaps with s/is generally required to be/are/

Perhaps s/is generally required to/MAY instead?

Alex

>
> Best regards,
> Ole
>
>
>
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