[c-nsp] DS1 provisioning using IP Unnumbered vs /30s

Alex Balashov abalashov at evaristesys.com
Fri Feb 6 16:02:04 EST 2009


Gert Doering wrote:
> Hi,
> 
> On Thu, Feb 05, 2009 at 08:48:35PM -0500, Alex Balashov wrote:
>> There is no reason why you need to "waste" IP address on the /30s - who 
>> said they have to be public IPs?  Just carve out some address space out 
>> of a 10.0.0.0/8 range and use private transport IPs.  
> 
> RFC1918 (indirectly) says that this is not permitted.
> 
> (If you do this, ICMPs sourced by the remote router will send their
> packets with an RFC1918 source address, which is strictly not allowed.
> If you filter those packets, you'll break traceroute and PMTUd).

I find that to be OK.  :)

-- 
Alex Balashov
Evariste Systems
Web    : http://www.evaristesys.com/
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