IDNA is described in the RFC 3490 [RFC3490] and contains a mechanism called Internationalizing Domain Names in Applications (IDNA). With IDNA, applications can use certain ASCII name labels to represents non-ASCII name. IDNA doesn’t have impact on 6NET DNS structure. From RFC3490 : “In particular, IDNA does not depend on any changes to DNS servers, resolvers, or protocol elements, because the ASCII name service provided by the existing DNS is entirely sufficient for IDNA.”

Thus IDNA is transparent for the DNS transport.