DNS ipv6 response code #4
Description
When there is a confirmed RR for an IPV4 address but the client asks for IPV6(AAAA), the server should respond NOERROR and the client will re-request for IPV4 (A). This will allow the client to redirect and ask for the IPV4 address faster. Also this information can be found in RFC 4074.
Now when adding an 'A' record, cryodns will add a blank 'AAAA' record to fix this problem. This issue was fixed on cryodns