Subject: [DNSOP] SVCB/HTTPS weasel words are dangerous.

From: Mark Andrews <[email-masked]>
Date: Sun, 31 Oct 2021 11:03:49 +1100

In AliasMode, records SHOULD NOT include any SvcParams, and
   recipients MUST ignore any SvcParams that are present.

Today we had the following record like this

example.com IN HTTPS 0 . alpn=h2 ipv4hint=192.0.2.1 ipv6hint=2001:DB8:

interpreting this as described leads to “0 .” which indicates
NO SERVICE OFFERED.  Rejecting this at load time would be much
safer but the weasel wording of "SHOULD NOT” makes this difficult.

Please make this MUST NOT.

Mark

-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742              INTERNET: [email-masked]