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Re: RTBH Support Across the Industry


From: Saku Ytti via NANOG <nanog () lists nanog org>
Date: Thu, 30 Jul 2026 11:23:02 +0300

Replacing blackhole community with QoS downgrade community is much more marketable in comparison, and infact one 
large tier1 used to offer this on a beta basis maybe 15-20 years ago. Sadly it is not commonly available.

I've tried google, bing, LLM. And I've got nothing.

It was either L3, GBLX, Sprint or ATT (I think...), and it was maybe
15-20 years ago. I have a mental image of the web page where they
documented it, and it was in red, and it was somehow communicated not
to be a product, but it was on a trial/beta basis.

Does anyone remember the QoS downgrade community existing at one of
the Tier1s, and even perhaps who it was and what the community was?

It is bizarre how fast truth dies. I recently thought I was crazy,
thinking that SI standard used to allow SI prefixes for three letter
currency codes. Now I'm having similar frustration, I know I'm right,
but there seems to be no proof of it anymore.

--
  ++ytti
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