Replace RFC 6966 with RFC 7766 at https://ednscomp.isc.org/ednscomp/
EDNS - over TCP Response (edns@512tcp) dig +vc +nocookie +norec +noad +edns +dnssec +bufsize=512 dnskey zone @server expect: NOERROR expect: OPT record with version set to 0 See RFC5966 and See RFC6891
Since RFC5966 is obsoleted by RFC 7766, the latter RFC shall be referenced.
To upload designs, you'll need to enable LFS and have admin enable hashed storage. More information