On Thu, Feb 2, 2017 at 5:44 AM, Cathy Almond <cat...@isc.org> wrote: > > > On 02/02/2017 02:52, Filho Arrais wrote: > > Hi, > > > > Hello, > > Excuse me the question, is there anything native to IPv6 like in IPv4 > > for PTR input? > > > > $GENERATE 1-254 $ PTR 100.200.236.$.examplae.com <http://examplae.com > >. > > > > -- > > Bear in mind that that reverse populating your IPv6 space in entirety is > potentially going to hurt you (the $GENERATE command actually generates > an RR for each record which will be held in the zone in memory). Think > about how many records your $GENERATE is going to create. You don't > want to have named failing to start because it does not have enough > memory (or the machine on which it is running does not have enough > memory) to hold all of the PTR RRsets in the zone. > > Please also think about whether you need to do this or not, especially > as the names are going to follow a generic pattern and not provide any > useful intelligence about the host using that address. > > Instead, I would suggest that you just create PTR entries for the IPv6 > hosts that actually need them for some reason, or to use dynamic DNS to > add/replace/delete them as addresses are used/discarded by dynamic clients. >
Note that there is future work being done to solve the 'too many entries' issue with GENERATE (does not solve the other concerns): https://www.ietf.org/internet-drafts/draft-woodworth-bulk-rr-03.txt -- Bob Harold
_______________________________________________ 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
