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networking - AD Dynamic DNS not working with Linux IPv6

I have an AD DNS/DHCP enabled server. I have mixed Windows
and Linux machines/servers. IPv4 is working great with DNS/DHCP, even for the Linux
systems. IPv6 is working great except that it won't generate a DHCP lease or DNS entry.
If static IPv6 AAAA records are used, I can use my RAS server, browse IPv6 websites, and
connect to any machine, even across the
internet.




What I can do with IPv6: I
can get a DHCP IP address on any system, Linux or Windows. I have fd0a:fb5*:bdc*:0::x as
my /64 prefix and it works great; ALL systems have an address with this prefix. can
ping, DNS lookup, and connect to Windows systems and websites perfectly. The only issue
I have is that IPv6 leases and DNS AAAA records are not added/updated dynamically for
the Linux systems. A records and IPv4 leases all work
fine.



I have added a dedicated user called
DHCPDynUpd and given added it to the DNSUpdateProxy group. I then assigned a password
that never expires and denied logon hours and disallowed signing into any machine. In
the DHCP settings on IPv4 and IPv6 I signed that user into the DNS dynamic update
registration. Then I set the IPv4 settings to "Dynamically update DNS A and PTR records
for DHCP clients that do not request updates (for example, clients running Windows NT
4.0)"; this is not a setting under IPv6. Then I set them to both dynamically update
A/AAAA and PTR records.



I know the user is
working or the DDNS updates for IPv4 wouldn't
work...



Also on the Linux machines I ensured
that they are set to a FQDN in the hostname file and that they are broadcasting the
hostname/domain in the dhclient config.



Machines
used:
⠀Windows Server 2012R1,
⠀Fedora 20 VPN/mail/web
servers,
⠀Windows 8.1




Some resources I found and followed
to the best of my ability:

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