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Re: I-D Action: draft-ietf-6man-rfc6434-bis-02.txt

Timothy Winters <twinters@iol.unh.edu> Mon, 30 October 2017 19:49 UTC

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From: Timothy Winters <twinters@iol.unh.edu>
Date: Mon, 30 Oct 2017 15:48:39 -0400
Message-ID: <CAOSSMjWcqAswxcQe_y9i6MygHn6CCyxWLhxXdENzZMAZ-8LfpA@mail.gmail.com>
Subject: Re: I-D Action: draft-ietf-6man-rfc6434-bis-02.txt
To: Brian E Carpenter <brian.e.carpenter@gmail.com>
Cc: 6man <ipv6@ietf.org>
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Hi Brian,

On Mon, Oct 30, 2017 at 3:29 PM, Brian E Carpenter <
brian.e.carpenter@gmail.com> wrote:

> Looks good. Three small points:
>
> > 5.3.  Protecting a node from excessive EH options
> ...
> > A host MAY disallow unknown options in destination options or hob-by-
> > hop options.  This should be configurable where the default is to
> > accept unknown options and process them per RFC2460.  If a packet
> > with unknown options is received and the host is configured to
> > disallow them, then the packet should be silently discarded.
>
> Not sure why this still refers to 2460.
>
Will fix in the next version.

>
> > 5.9.  Default Router Preferences and More-Specific Routes - RFC 4191
> >
> >    "Default Router Preferences and More-Specific Routes" [RFC4191]
> >    provides support for nodes attached to multiple (different) networks,
> >    each providing routers that advertise themselves as default routers
> >    via Router Advertisements.  In some scenarios, one router may provide
> >    connectivity to destinations the other router does not, and choosing
> >    the "wrong" default router can result in reachability failures.  In
> >    order to resolve this scenario IPv6 Nodes MUST implement [RFC4191]
> >    and SHOULD implement Type C host role.
>
> I suggest that the last phrase should clarify that "Type C" is defined
> in RFC 4191, because as written that is not obvious.
>
We can clarify that in the next revision.

>
> Are we sure that draft-ietf-v6ops-ipv6rtr-reqs is an Informative reference?
>
At the moment we haven't had any normative text from that but it's
something that might change going forward.

>
> Regards
>    Brian
>
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