BCP38 exceptions for RFC1918 space

Florian Weimer fw at deneb.enyo.de
Sun Aug 15 16:14:41 UTC 2010

What's the current consensus on exempting private network space from
source address validation?  Is it recommended?  Discouraged?

(One argument in favor of exceptions is that it makes PMTUD work if
transfer networks use private address space.)

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