Hi all, I'm Miguel Angel from RedIRIS. We are configuring our IPv6/IPv4 production servers, with Bind 9.2.1 In the docs related with DNS config, it sais that with .ip6.arpa we should use bitstrings labels to configure DNS servers. And Bind is configured to understand .arpa with bitstring labels. You can check that if you ask for 2001:720:418:cafe::159 Bind try to find \[x200107200418CAFE0000000000000159/128].ip6.arpa and not 1.5.9.0.0.0.0.0.0.0.0.0.0.0.0.0.E.F.A.C.8.1.4.0.0.2.7.0.1.0.0.2.ip6.arpa (really, the nibble fotmat should be used with the deprecated .ip6.int) The problem is that RIPE only makes the delegation using nibble + .ip6.arpa and I think it is not correct. And that's is how they configure it in its nameservers:
0.2.7.0.1.0.0.2.ip6.arpa Server: ns-v6.ripe.net Address: 193.0.0.193#53
Non-authoritative answer: 0.2.7.0.1.0.0.2.ip6.arpa nameserver = tais.rediris.es. 0.2.7.0.1.0.0.2.ip6.arpa nameserver = chico.rediris.es. 0.2.7.0.1.0.0.2.ip6.arpa nameserver = ns-v6.ripe.net. Authoritative answers can be found from: 0.2.7.0.1.0.0.2.ip6.arpa nameserver = tais.rediris.es. 0.2.7.0.1.0.0.2.ip6.arpa nameserver = chico.rediris.es. 0.2.7.0.1.0.0.2.ip6.arpa nameserver = ns-v6.ripe.net. ns-v6.ripe.net internet address = 193.0.0.193 It works, but not:
\[x20010720/32].ip6.arpa Server: ns-v6.ripe.net Address: 193.0.0.193#53
** server can't find \[x20010720/32].ip6.arpa.: NXDOMAIN I think, then, that the reverse delegation is never going to work, because Bind will try to find \[x200107200418CAFE0000000000000159/128].ip6.arpa and not 1.5.9.0.0.0.0.0.0.0.0.0.0.0.0.0.E.F.A.C.8.1.4.0.0.2.7.0.1.0.0.2.ip6.arpa Should RIPE starts to delegate IPv6 prefixes under .arpa using bitstring format? Or maybe I'm wrong? Is someone having the same problem? I've done some tests and as I have said, using nibble with ip6.arpa it doesn't work. Thanks for all, Miguel.