No. This was a minor typing error. It should have referenced RFC6168, which is "Requirements for Management of Name Servers for the DNS".
If you are seeing the incorrect question, please answer question DNS.5.14 as if it reads
DNS.5.14. RFC 6168
Does or will this RSP operate DNS service according to RFC 6168 ("Requirements for Management of Name Servers for the DNS")?
Both the RSP interface and the Handbook have been updated to reflect this minor correction, so please ensure you obtain a copy of the Handbook v1.2.2 or above.