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Re: Redploying most of 127/8 as unicast public


From: Owen DeLong via NANOG <nanog () nanog org>
Date: Fri, 19 Nov 2021 06:47:44 -0800



On Nov 17, 2021, at 19:40 , Jerry Cloe <jerry () jtcloe net> wrote:

 
 
Subject: Redploying most of 127/8 as unicast public
To: nanog <nanog () nanog org <mailto:nanog () nanog org>>; 
This seems like a really bad idea to me; am I really the only one who noticed?

https://www.ietf.org/id/draft-schoen-intarea-unicast-127-00.html 
<https://www.ietf.org/id/draft-schoen-intarea-unicast-127-00.html>
 
I can think of about a dozen /8's that would be better to use. (Hint, they all have DOD in the name.) They haven't 
been in routing tables for decades and there wouldn't be hardly any technical issues (like there would be with 
127/8). The only drawback is I've seen a lot of organizations treat them like rfc1918 space.
 

You are assuming facts not in evidence.

The fact that a prefix isn’t in a routing table you can see does not mean it is not used in a circumstance where
having it appear in routing tables you can see would be harmful or disruptive.

Owen


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