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RFC 7871, "Client Subnet in DNS Queries", May 2016

Source of RFC: dnsop (ops)
See Also: RFC 7871 w/ inline errata

Errata ID: 4735
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Robert Edmonds
Date Reported: 2016-07-08
Verifier Name: Joel Jaeggli
Date Verified: 2017-03-29

Section 13 says:

   7.   Due its internal implementation, ANS finds a response that is
        tailored for the whole /16 of the client that performed the
        query.

   8.   ANS adds an ECS option in the response, containing:
[...]
        *  SCOPE PREFIX-LENGTH set to 0x30, indicating a /48 network.

It should say:

   7.   Due its internal implementation, ANS finds a response that is
        tailored for the whole /48 of the client that performed the
        query.

   8.   ANS adds an ECS option in the response, containing:
[...]
        *  SCOPE PREFIX-LENGTH set to 0x30, indicating a /48 network.

Notes:

The prose description in step 7 does not match the ECS option described in step 8. Either both should say "/16" or both should say "/48". Probably /48 was meant, since a /16 would be a huge amount of IPv6 address space.

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