Re: [v6ops] A common problem with SLAAC in "renumbering" scenarios

[Mark Smith <[e-mail]>]

On Fri, 22 Feb 2019 at 08:53, Gert Doering <[e-mail]> wrote:
>
> Hi,
>
> On Fri, Feb 22, 2019 at 08:40:24AM +1100, Mark Smith wrote:
> > > Applications today seem to be all "HTTP(S)" or "QUIC", and they all had to
> > > learn how to deal with NAPT.  New protocols that embed IP addresses are
> > > killed by IPv4 NAPT anyway, so that ship has sailed -
> >
> > Getting it back in IPv6 is one of the things I hope we can get.
> >
> > That's because applications that would be best performing, most robust and
> > more secure with a peer-to-peer communications model are forced to adopt an
> > absolute client-server model (where the server is a much more likely
> > performance bottleneck, the server becomes a SPOF for all clients using it
> > at the time, and the server is a natural interception point for a malicious
> > server operator).
>
> Have you looked out there recently?  None of the big actors in the market
> seem to have any particular interest in moving away from a "we are the cloud
> content players, you are just visiting clients" model.
>

Generally it's in their business interests not to.

However, just like everybody else, they don't have a choice anyway,
even if they wanted to with IPv4 because of NAT.

Still, there are lots of little actors, and a peer-to-peer model can
allow them to scale their application without having to spend massive
amounts on server infrastructure (physical or virtual.)

> (The gaming industry has, to some extent, but that doesn't seem to be
> a really strong driver)
>

Something significant happened in that regard recently.

"IPv6 on Xbox One"
https://support.xbox.com/en-US/xbox-one/networking/ipv6-on-xbox-one

"And—most useful for Xbox—the expansion removes the need for Network
Address Translation (NAT), which can interfere with multiplayer gaming
and chat over IPv4 networks."

"..., for the best possible experience, we recommend enabling IPv6 on
your network."

> [..]
> > Another analogy to show the significance is that with NAT in the telephone
> > network, it wouldn't be possible for me to give you this phone's number to
> > call me. Would any of us accept that constraint on the usability of our
> > phones?
>
> When did you do the last phone call on your mobile tablet-like computer
> thingie?

Sunday (and I need to get back to my Uncle since). Previous weeks a
number of them organising a trip and updating expired credit card
number details.

I'll observe that you've still got your phone number in your email
signature below, so being able to convey your globally unique phone
number and receive calls to it isn't yet obsolete.

Regards,
Mark.

>
> Gert Doering
>         -- NetMaster
> --
> have you enabled IPv6 on something today...?
>
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