[182073] in North American Network Operators' Group
Re: Dual stack IPv6 for IPv4 depletion
daemon@ATHENA.MIT.EDU (Owen DeLong)
Thu Jul 9 22:10:49 2015
X-Original-To: nanog@nanog.org
From: Owen DeLong <owen@delong.com>
In-Reply-To: <op.x1i4t4entfhldh@rbeam.xactional.com>
Date: Thu, 9 Jul 2015 19:08:32 -0700
To: Ricky Beam <jfbeam@gmail.com>
Cc: "nanog@nanog.org" <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
> On Jul 9, 2015, at 16:28 , Ricky Beam <jfbeam@gmail.com> wrote:
>=20
> On Thu, 09 Jul 2015 19:08:56 -0400, Owen DeLong <owen@delong.com> =
wrote:
>> the reality I=E2=80=99m trying to point out is that application =
developers make assumptions based
>> on the commonly deployed environment that they expect in the world.
>=20
> Partially. It's also a matter of the software guys not having any clue =
what-so-ever w.r.t. networking. In this case, APPLE designed Bonjour to =
not cross network boundaries. Idiotic, but it allows them to sell =
"servers" that do the cross-network routing.
Actually it=E2=80=99s not a design problem in IPv6. A simple tweak to =
the software to send to ff05::<group> instead of ff02::<group> or better =
yet, allow the user to edit the scope in System Preferences is all that =
is really needed.
However, in IPv4, mDNS/Bonjour (and mDNS is uPNP=E2=80=99s fault, not =
Apple=E2=80=99s to the best of my knowledge) use broadcast packets and =
that=E2=80=99s a design flaw. However, hard to argue with the choice =
since multicast, especially cross-router multicast is pretty much busted =
in any sort of home gateway in IPv4 anyway.
>> If we create a limited environment, then that is what they will code =
to.
>=20
> They will code to what they understand, what "works for them", and =
what their users report "works for me". We will always end up with =
"substandard" quality because they have little (or no) understanding of =
how networking does it's thing.
>=20
> (And then marketing, and legal will step in and pooh on it even more.)
OK=E2=80=A6 Clearly you are determined to let cynicism and avoidance =
drive your ideas here. I can=E2=80=99t help that.
Hopefully enough others will try to make the internet more useful as we =
move forward and hand out larger end-site prefixes.
Owen
