Problems with removing NAT from a network

Mark Andrews marka at isc.org
Wed Jan 5 22:31:10 CST 2011


In message <AANLkTimkgPYKY_AkA5px4-ca-3=oufhGbnenRkPmpTE1 at mail.gmail.com>, Came
ron Byrne writes:
> On Wed, Jan 5, 2011 at 6:42 PM, Dobbins, Roland <rdobbins at arbor.net> wrote:
> >
> > On Jan 6, 2011, at 9:38 AM, ML wrote:
> >
> >> At least not without some painful rebuilds of criticals systems which ha=
> ve these IPs deeply embedded in their configs.
> >
> > They shouldn't be using IP addresses in configs, they should be using DNS=
>  names. =A0Time to bite the bullet and get this fixed prior to their eventu=
> al forced migration to IPv6.
> >
> 
> Somebody should tell the nytimes.com about this being a bad practice,
> many of their images are linked to ip addresses directly and will
> certainly fail in the future (this year, mobile) networks that will
> use NAT64/DNS64.  I am sure users will find other places to view their
> news when nytimes.com fails to work in these ipv6-only networks.

Which is one of the reasons why DS-lite is a better solution for
providing legacy access to the IPv4 Internet than NAT64/DNS64.
DS-lite only breaks what NAT44 breaks.  DS-lite doesn't break new
things.

> Small summary of the problem of IPv4 literals and how they will break
> in certain IPv6 environments that will be deployed this year
> http://groups.google.com/group/ipv4literals
> 
> Cameron
> =3D=3D=3D=3D=3D=3D=3D=3D=3D
> http://groups.google.com/group/tmoipv6beta
> =3D=3D=3D=3D=3D=3D=3D=3D=3D
> 
> > ------------------------------------------------------------------------
> > Roland Dobbins <rdobbins at arbor.net> // <http://www.arbornetworks.com>
> >
> > Most software today is very much like an Egyptian pyramid, with millions
> > of bricks piled on top of each other, with no structural integrity, but
> > just done by brute force and thousands of slaves.
> >
> > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0-- Alan Kay
> >
> >
> >
> 
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org




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