"Programmers can't get IPv6 thus that is why they do not have IPv6 in their applications"....

Wed Nov 28 06:08:42 UTC 2012

In message <69ADB141-D40B-4DFB-8FBC-D0863897B78C at delong.com>, Owen DeLong write
s:
> 
> On Nov 27, 2012, at 19:18 , "Dave Edelman" <dedelman at iname.com> wrote:
> 
> > I think that we are missing a significant part of this conversation.=20=
> 
> >=20
> > Even if programmers never write a line of code that invokes IPv6, they =
> need
> > to accommodate the effects of all the other programmers who aren't =
> writing a
> > line of IPv6 code. CGN renders most application logs useless unless =
> they
> > record source port as well as address. For many industries, logging of
> > transactions in a manner that allows you to track back to the =
> originator of
> > the transaction is not optional. And yes that does translate to track =
> back
> > to the ISP who (when presented with the appropriate piece of paper) =
> can
> > convert the timestamp /IP address/ port combination to the customer =
> who is
> > responsible for the account.
> >=20
> 
> That won't help. Think about it this way. A session state log entry is =
> roughly 512 bytes.
> 
> I'm told (by several of the large residential providers) that the =
> average session rate per
> subscriber is around 33,000 connections/subscriber/day for roughly =
> 17Kbytes/day of
> log entries per day.
> 
> Take a carrier like Comcast that has ~20,000,000 subscribers. That's =
> 660,000,000,000
> or 660 Terabytes per day of log files. Now, imagine trying to keep that =
> data set for
> 7 years worth of data. That's a 660*365*7 =3D 1,686,300 Terabyte (or 1.7 =
> Exabyte)
> storage array. I'm sure EMC would love to build something like that, =
> but, I'm willing
> to bet that any economic analysis of that problem against CALEA reveals =
> the
> relatively swift conclusion that the fines cost less than the =
> infrastructure to preserve
> the logs.

The fine will be first then the court order to move all the customers
to IPv6.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org