Re: [Int-area] New Version Notification for draft-herbert-ipv4-eh-03.txt

[waldemar <[e-mail]>]

On 3/21/24 14:59, Tom Herbert wrote:
> On Thu, Mar 21, 2024 at 2:36 PM Brian E Carpenter
> <[e-mail]> wrote:
>> On 22-Mar-24 09:04, Tom Herbert wrote:
>>> On Thu, Mar 21, 2024 at 12:46 PM Templin (US), Fred L
>>> <Fred.L.Templin=[e-mail]> wrote:
>>>> Brian,
>>>>
>>>>> Why should the IETF spend effort on upgrading IPv4 capabilities at this point?
>>>> For air/land/sea/space mobile Internetworking, we expect to engage steady-state IP
>>>> fragmentation over some paths, but IPv4 will still be in the picture for a long time to
>>>> come and IPv4 fragmentation has known limitations (e.g., RFC4963). IPv4 fragmentation
>>>> using the IPv6 Fragment Header (adapted for IPv4) would address many of the issues.
>>>>
>>>> This is just to name one example. Another example is adapting IPv6 HBH options to
>>>> carry IP parcels and Advanced Jumbos in IPv4 packets for operation over networks
>>>> where IPv4 will still be used for the long term.
>>>>
>>>> IPv4 is going to be around for a long time in many networks, so making it work
>>>> more like IPv6 seems like a useful improvement.
>>> Yes, we still have IPv4 users that need the capabilities. If everyone
>>> were on IPv6 we wouldn't need this.
>> So this proposal hinders IPv6 adoption. I think it would lead to an
>> "interesting" IETF Last Call discussion.
Increasing adoption by crippling IPv4???  No, sir, the opposite is a 
better approach. Improve IPv6, improve IPv4. This is the way to go.
> Hi Brian,
>
> Well I knew going in this would be provocative :-)
>
> Actually, I believe this accelerates IPv6 adoption. We're essentially
> unifying portions IPv4 and IPv6 so that makes a complete transition
> that much easier. If people adopt the hacky alternatives I mentioned
> then it's likely they'll just propagate those into IPv6 (that's
> another effect we've seen, some people "adopt" IPv6 but still treat it
> like IPv4).  Besides, we've been working on IPv6 for what, thirty
> years, I really doubt *this* is the thing that will get the blame for
> how long adoption is taking :-).