North American Network Operators Group
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Re: Exodus / Clue problems

  • From: Marc Slemko
  • Date: Mon Nov 16 19:55:04 1998 
On Mon, 16 Nov 1998, Phil Howard wrote:

> They are using (wasting) the whole 10.0.0.0/8 on one LAN?  Sheesh!
> 
> I've picked 172.30.0.0/16 to be divided up into 16384 /30's to use for
> numbered links.  I'll probably choose another piece of address space

If those numbered links will generate packets (eg. ICMP errors) sourced
from 1918 space, then you should not be using 1918 addresses on them and
it can break things like Path MTU Discovery.  

In general, using 1918 addresses for interface addresses when the
interface routes public traffic is NOT a good idea unless there are
special circumstances.

Check the archives; this was discussed to death a few weeks ago.