Why doesn't "Cloudflare 1.1.1.1" compress root answers?

• Subject: Why doesn't "Cloudflare 1.1.1.1" compress root answers?
• From: bjorn at mork.no (Bjørn Mork)
• Date: Tue, 03 Apr 2018 22:00:47 +0200

At first I thought they had disabled compression:

 bjorn at miraculix:~$ dig . ns @1.1.1.1|grep SIZE
 ;; MSG SIZE  rcvd: 431
 bjorn at miraculix:~$ dig . ns @8.8.8.8|grep SIZE
 ;; MSG SIZE  rcvd: 239
 bjorn at miraculix:~$ dig . ns @9.9.9.9|grep SIZE
 ;; MSG SIZE  rcvd: 239


But then I noticed that they *do* compress other names:

 bjorn at miraculix:~$ dig net ns @1.1.1.1|grep SIZE
 ;; MSG SIZE  rcvd: 253
 bjorn at miraculix:~$ dig net ns @8.8.8.8|grep SIZE
 ;; MSG SIZE  rcvd: 253
 bjorn at miraculix:~$ dig net ns @9.9.9.9|grep SIZE
 ;; MSG SIZE  rcvd: 253


Which just makes it even more confusing.  What's so special about root?
Except for the obvious :-)



Bjørn

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