RFC 3363 (rfc3363) - Page 3 of 6
Representing Internet Protocol version 6 (IPv6) Addresses in the Domain Name System (DNS)
Alternative Format: Original Text Document
RFC 3363 Representation of IPv6 Addresses in DNS August 2002 The probability of failure during the process of resolving an N-link A6 chain also appears to be roughly proportional to N, since each of the queries involved in resolving an A6 chain has roughly the same probability of failure as a single AAAA query. Last, several of the most interesting potential applications for A6 RRs involve situations where the prefix name field in the A6 RR points to a target that is not only outside the DNS zone containing the A6 RR, but is administered by a different organization entirely. While pointers out of zone are not a problem per se, experience both with glue RRs and with PTR RRs in the IN-ADDR.ARPA tree suggests that pointers to other organizations are often not maintained properly, perhaps because they're less susceptible to automation than pointers within a single organization would be. 2.2 Recommended Standard Action Based on the perceived consensus, this document recommends that RFC 1886 stay on standards track and be advanced, while moving RFC 2874 to Experimental status. 3. Bitlabels in the Reverse DNS Tree RFC 2673 defines a new DNS label type. This was the first new type defined since RFC 1035 [RFC 1035]. Since the development of 2673 it has been learned that deployment of a new type is difficult since DNS servers that do not support bitlabels reject queries containing bit labels as being malformed. The community has also indicated that this new label type is not needed for mapping reverse addresses. 3.1 Rationale The hexadecimal text representation of IPv6 addresses appears to be capable of expressing all of the delegation schemes that we expect to be used in the DNS reverse tree. 3.2 Recommended Standard Action RFC 2673 standard status is to be changed from Proposed to Experimental. Future standardization of these documents is to be done by the DNSEXT working group or its successor. Bush, et. al. Informational
