[dns-operations] reverse DNS for DHCPV6 and PD's

Michael Sinatra michael at rancid.berkeley.edu
Fri Jun 10 20:28:21 UTC 2011

On 06/10/11 12:24, Bob Paolucci wrote:
> Hey Guys,
> For those out there doing IPV6, curious how you are handling reverse DNS
> for DHCPV6 and Prefix delegations :)

Reverse DNS is fairly easy with DHCPv6 because you can delegate DNS on 
nibble boundaries and separate your DHCPv6 hosts from your EUI-64 
(SLAAC) and static hosts.  For example, your DHCPv6 pool could be 
2001:db8:400:500:0000:dddd::/96 out of a /64.  That gives you 4.3 
billion DHCPv6 addresses, still with room to assign statics and EUI-64 
(although SLAAC privacy addresses in theory could cause collisions). 
Then you can just delegate 
d.d.d.d. to a DDNS 
server and have your DHCPv6 hosts be automatically registered, while 
still maintaining your statics separately.


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