ipv6 question

Karl Auer kauer at biplane.com.au
Wed Mar 9 22:11:31 CST 2011

On Thu, 2011-03-10 at 11:43 +1100, Mark Andrews wrote:
> In message <1299711449.2109.98.camel at karl>, Karl Auer writes:
> > On Wed, 2011-03-09 at 09:01 -0600, imNet Administrator wrote:
> > > Where are you pinging it from? also, the 2001:db8::/32 prefix is used
> > > for "documentation purposes" and might be handled differently by the
> > > TCP/IP stack.
> > 
> > Works fine in Linux - I've been using it (in an isolated training room
> > setup) for years.
> > 
> > Regards, K.
> It is not a good idea to use the documentation prefix for anything
> other than documentation.  How hard is it to generate a ULA and use
> it?

I suppose I took/take the view that it *is*, in a sense, being used for

The network is a training network, isolated from the Internet, and used
for demonstration purposes. It's a good way to engrave the doco prefix
in the students' minds. It also allows all the slides, exercises and
other documentation to use the documentation prefix and yet directly
match the demonstration network.

ULA prefixes have little internal logic and are hard to remember. Not a
problem in production, but just another barrier in a training
environment. "2001:db8::/32" is very easy to remember (I guess that's
the point) and easy to add easy-to-use subnets into.

However, I do appreciate that it's a bit of an edge case. In my training
I specifically draw the students' attention to this fact.

Thanks, K.

Karl Auer (kauer at biplane.com.au)                   +61-2-64957160 (h)
http://www.biplane.com.au/kauer/                   +61-428-957160 (mob)

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