thanks for your comment. But if only some IP have e reverse..what about the other server who have received an IP in the range? Ip that can be changed every x hours. IF no reverse, it can be blacklisted for some reasons or having some problems with services asking a reverse dns resolution.
> From: [email protected] > To: [email protected] > CC: [email protected] > Subject: RE: reverse dns for IPV6 ranges > Date: Mon, 5 Mar 2012 21:15:53 +0000 > > > 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 >
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