On Wed, Jan 5, 2011 at 8:31 PM, Mark Andrews <marka@isc.org> wrote:
In message <AANLkTimkgPYKY_AkA5px4-ca-3=oufhGbnenRkPmpTE1@mail.gmail.com>, Came ron Byrne writes:
On Wed, Jan 5, 2011 at 6:42 PM, Dobbins, Roland <rdobbins@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.
Thanks for the tip. But, there are legitimate business reason in various different types of networks for various strategies, thanks for plugging the one your organization makes. I am tired of the IPv6 transition flavor of the day war. The reality for content folks is that there will be IPv4 host, IPv6 hosts, and dual stack hosts. Content needs to be dual-stack to reach everyone the best way (native), but if they lack dual-stack and they use IPv4 literals, they are going to lose eyeballs. End of story. Content folks-- do yourself a favor and follow Roland's advice (also in RFC 1958) and don't use address literals, use names. And, you will notice that the list at http://groups.google.com/group/ipv4literals shows only a few web site, because there are only a few that have this design flaws. If you know others, strengthen your case and add them to the list so that all parties can benefit. Otherwise, it is just a few poorly designed internet services that will be in a rush to fix services when users complain.... or there web pages hits start trending down while their competitors trend up. Cameron
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@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@isc.org