Hi, Stewart,

On 4/24/2017 10:12 AM, Stewart Bryant wrote:
> Minor issues:
>
>  A node MUST NOT reduce its estimate of the Path MTU below the IPv6
>  minimum link MTU.
>
> SB> I missed this last time.
> SB>
> SB> Presumably you mean "A node MUST NOT reduce its estimate of the 
> SB> Path MTU below the IPv6 minimum link MTU in response to such
> SB> a message."
This seems fine to me, FWIW - i.e., limiting the advice in this doc to
the mechanism in  this doc.

> SB> 
> SB> Otherwise I would have thought that this was entirely a matter 
> SB> for the host whether it wanted to use a Path MTU below the IPv6 
> SB> link minimum. Nothing breaks if the host takes a more conservative
> SB> decision.
I don't agree; the host at that point is violating RFC2460. It should
never think that an IPv6 link or path with an MTU below what RFC2460
requires is valid.

Joe

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