Request for comment -- BCP38
math at sizone.org
Mon Sep 26 14:47:24 UTC 2016
This might break some of those badly-behaving "dual ISP" COTS routers out there
that use different inbound from outbound paths since each is the fastest of
I did this manually when I was messing around with multiple broadband links on
a fbsd router years ago, was glad it worked at the time.
On Mon, Sep 26, 2016 at 07:11:42AM -0700, Paul Ferguson said:
>No -- BCP38 only prescribes filtering outbound to ensure that no packets leave your network with IP source addresses which are not from within your legitimate allocation.
> - ferg
>On September 26, 2016 7:05:49 AM PDT, Stephen Satchell <list at satchell.net> wrote:
>>Is this an accurate thumbnail summary of BCP38 (ignoring for the moment
>>the issues of multi-home), or is there something I missed?
>>> The basic philosophy of BCP38 boils down to two axioms:
>>> Don't let the "bad stuff" into your router
>>> Don't let the "bad stuff" leave your router
>>> The original definition of "bad stuff" is limited to source-
>>> address grooming both inbound and outbound. I've expanded on the
>>> original definition by including rule generation to control
>>> broadcast address abuse.
>Sent from my Android device with K-9 Mail. Please excuse my brevity.
Ken Chase - math at sizone.org Toronto Canada
More information about the NANOG