Hello bind-users How do you manage your IPv6 Reverse Entries? Let´s assume that we have a /32 IPv6 subnet for our needs and that we only publish PTR records where they are needed like for mail servers and maybe DNS and web servers. Our Network is: 2001:db8::/32 This would give us a Zone named 8.b.d.0.1.0.0.2.ip6.arpa Our DNS has the ip 2001:db8:193:192::20/64 and the other one has 2001:db8:193:193::20/64 1) Would you create an entry in 8.b.d.0.1.0.0.2.ip6.arpa like: 20.2.9.1.0.3.9.1.0 IN A dns1.example.org. 20.3.9.1.0.3.9.1.0 IN A dns2.example.org. Or (also in 8.b.d.0.1.0.0.2.ip6.arpa) $ORIGIN 2.9.1.0.3.9.1.0.8.b.d.0.1.0.0.2.ip6.arpa dns1 IN A dns1.example.org. $ORIGIN 3.9.1.0.3.9.1.0.8.b.d.0.1.0.0.2.ip6.arpa dns2 IN A dns2.example.org. Or... the third aproach is the complex one: In the Zone 8.b.d.0.1.0.0.2.ip6.arpa delegate 0.8.b.d.0.1.0.0.2.ip6.arpa to dns1.example.org In the Zone 0.8.b.d.0.1.0.0.2.ip6.arpa delegate 1.0.8.b.d.0.1.0.0.2.ip6.arpa to dns1.example.org In the Zone 1.0.8.b.d.0.1.0.0.2.ip6.arpa delegate 9.1.0.8.b.d.0.1.0.0.2.ip6.arpa to dns1.example.org and so on until we reach 20.3.9.1.0.3.9.1.0.8.b.d.0.1.0.0.2.ip6.arpa. There I create an entry like 20 IN A dns1.example.org. 2) In the near future we will have a lot more entries in the reverse Zone and, so I guess, some parts of it will be delegated to other servers. When would you start delegating parts of Zone 8.b.d.0.1.0.0.2.ip6.arpa into other Zone-Files? How far down the tree would you go for de delegation? 3) Will a recursive resolver have problems if I only have a SOA for 8.b.d.0.1.0.0.2.ip6.arpa and no SOA for the zones below like 1.0.3.9.1.0.8.b.d.0.1.0.0.2.ip6.arpa? The reason I ask is: We had generic A records for our IPv4 space: dynamic.001-002.003-004.catv.example.org IN A 1.2.3.4 and some mailservers complained that there was no zone for 001-002.003-004.catv.example.org. nor 003-0004.catv.example.org. and no entry for catv.example.org. (we only had the example.org Zone with host a host dynamic.001-002.003-004.catv) Tia for your inputs and tips Philippe
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