> Can anyone help me with its experience on reverse dns for IPV6? > Presently, when we reverse an IPV4 subnet for clients, we configure all the > reverse for the whole subnet. > It is a lot of PTR's but perfectly manageable. > With IPV6, the number of IP's that we will receive is amazing.... > So...it seems impossible for every single IPV6 inthe range to configure a PTR. > So...what to do? > What is the common practice? > What is possible with BIND?
For our IPv6 address space 2001:4870:20ca::/48, I created a reverse lookup zone a.c.0.2.0.7.8.4.1.0.0.2.ip6.arpa and arranged for delegation from our ISP. I included PTR records only for those hosts accessible from the outside. Internal DNS is Windows Active Directory integrated. Here's a sample from the zone file, which contains about 25 PTR records in all: $ORIGIN . $TTL 3600 ; 1 hour a.c.0.2.0.7.8.4.1.0.0.2.ip6.arpa IN SOA ns1.countryday.net. hostmaster.countryday.net. ( 2012030101 ; serial 86400 ; refresh (1 day) 3600 ; retry (1 hour) 1209600 ; expire (2 weeks) 3600 ; minimum (1 hour) ) NS ns1.countryday.net. NS ns2.countryday.net. $ORIGIN 9.0.0.0.a.c.0.2.0.7.8.4.1.0.0.2.ip6.arpa. a.5.6.9.f.9.e.4.3.4.3.e.f.a.0.8 PTR ns2.countryday.net. $ORIGIN 8.5.1.0.a.c.0.2.0.7.8.4.1.0.0.2.ip6.arpa. 2.9.1.f.1.d.2.1.b.f.7.5.7.f.8.0 PTR ns1.countryday.net. I would also be interested in hearing about the practices of others. Jeff. Jeffry A. Spain Network Administrator Cincinnati Country Day School _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users