Re: [OSPF] Spencer Dawkins' No Objection on draft-ietf-ospf-transition-to-ospfv3-09: (with COMMENT)

[joel jaeggli <[e-mail]>]

On 6/25/16 8:21 PM, Spencer Dawkins wrote:
> Spencer Dawkins has entered the following ballot position for
> draft-ietf-ospf-transition-to-ospfv3-09: No Objection
> 
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> 
> ----------------------------------------------------------------------
> COMMENT:
> ----------------------------------------------------------------------
> 
> This was nice work.
> 
> I did have one question - I don't think it would be a likely problem, but
> is it worth pointing out that you're taking OSPFv3 payloads that might
> have been sized for IPv6, and encapsulating them as IPv4 payloads that
> might have a smaller MTU?

Given that these devices have a common link mtu (otherwise they would
have trouble forming adjcency over the broadcast domain) the opfv3
payload will always be sized for the v6 network which means the ipv4
variant of the packet packet will always be 20 bytes smaller due to the
ipv6 header being 20 bytes larger then the v4 one..

> If you tell me this isn't a problem, I'll believe you, of course, but I
> needed to ask :-)
>
>