Re: "Everyone should be deploying BCP 38! Wait, they are …."

Larry Sheldon LarrySheldon at
Tue Feb 18 19:11:03 UTC 2014

On 2/18/2014 11:20 AM, Jay Ashworth wrote:
> Here's a piece which uses the MIT ANA data to assert that the job is
> mostly done already.
> Unless I'm very much mistaken, it appears that a large percentage of
> the failed BCP 38 spoofing tests listed in that data are actually due
> to customer side NAT routers dropping packets...
> which is of course egress filtering rather than ingress filtering,
> and thus doesn't actually apply to our questions.
> Am I interpreting that correctly?

The date seems a little past "buy by" in light of the very recent 
observations and comments here.


Requiescas in pace o email           Two identifying characteristics
                                         of System Administrators:
Ex turpi causa non oritur actio      Infallibility, and the ability to
                                         learn from their mistakes.
                                           (Adapted from Stephen Pinker)

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