BCP38 exceptions for RFC1918 space

Florian Weimer fw at deneb.enyo.de
Sun Aug 15 12:15:11 CDT 2010


* Michael J. Wise:

> On Aug 15, 2010, at 9:14 AM, Florian Weimer wrote:
>
>> What's the current consensus on exempting private network space from
>> source address validation?
>
> BCP38-land MUST *never* see RFC1918-space traffic. Ever.
> Unless you're using a border router as a NAT device, of course....
>
> The only way your question makes sense is if someone who should know
> better is intending to announce some chunk of RFC1918-space via BGP.
>
> Please tell us that is not your intent.

It's not.  It's not even about my or my employer's network, that's why
I need to exercise extra caution before handing out advice. 8-)




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