NAP - HRA Discovery

I can't get my NAP Clients to search for a _HRA._TCP DNS Record in the Domain. It's just looking for a record in the site and nowhere else.

If I create a SRV Record like _hra._tcp.<sitename>._sites.<domainname> it does work. So the Discovery is enabled and working. All fine.

But if I delete that record and instead create one in _hra._tcp.<domainname> the client never tries to resolve that name.
I've used Network Monitor and can see that the domain joined client (Windows 7) does not even try to do a DNS Lookup for that SRV Record which is odd.

A manual NSLOOKUP for _hra._tcp works and gives the right info, but as mentioned above, the client is not even trying to find that address.

C:\Users\administrator>nslookup
Default Server:  UnKnown
Address:  192.168.0.10> set type=srv> _hra._tcp
Server:  UnKnown
Address:  192.168.0.10

_hra._tcp.domain.local   SRV service location:
          priority       = 10
          weight         = 10
          port           = 443
          svr hostname   = lfnap02.domain.local
_hra._tcp.domain.local   SRV service location:
          priority       = 10
          weight         = 10
          port           = 443
          svr hostname   = lfnap01.domain.local
lfnap02.domain.local     internet address = 192.168.0.14
lfnap01.domain.local     internet address = 192.168.0.13
> quit

From my point of view, the Discovery is setup correctly because it can find and resolve the Site SRV Record if it exists.
The clients are using DHCP and have the Primary DNS Suffix set.

C:\Users\administrator>ipconfig /all

Windows IP Configuration

   Host Name . . . . . . . . . . . . : LFCLI01
   Primary Dns Suffix  . . . . . . . : domain.local
   Node Type . . . . . . . . . . . . : Hybrid
   IP Routing Enabled. . . . . . . . : No
   WINS Proxy Enabled. . . . . . . . : No
   DNS Suffix Search List. . . . . . : domain.local
   System Quarantine State . . . . . : Not Restricted


Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . : domain.local
   Description . . . . . . . . . . . : Microsoft Virtual Machine Bus Network Adapter
   Physical Address. . . . . . . . . : 00-15-5D6F-1F-20
   DHCP Enabled. . . . . . . . . . . : Yes
   Autoconfiguration Enabled . . . . : Yes
   Link-local IPv6 Address . . . . . : fe80::b55d:95d2:c634:711a%11(Preferred)
   IPv4 Address. . . . . . . . . . . : 192.168.0.104(Preferred)
   Subnet Mask . . . . . . . . . . . : 255.255.255.0
   Lease Obtained. . . . . . . . . . : den 18 mars 2013 13:45:44
   Lease Expires . . . . . . . . . . : den 4 april 2013 10:41:37
   Default Gateway . . . . . . . . . : 192.168.0.1
   DHCP Server . . . . . . . . . . . : 192.168.0.10
   DHCPv6 IAID . . . . . . . . . . . : 234886493
   DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-CF-44-0F-00-15-5D-6F-1F-20

   DNS Servers . . . . . . . . . . . : 192.168.0.10
   NetBIOS over Tcpip. . . . . . . . : Enabled

Tunnel adapter isatap.domain.local:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . : domain.local
   Description . . . . . . . . . . . : Microsoft ISATAP Adapter
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes

Tunnel adapter Teredo Tunneling Pseudo-Interface:

   Media State . . . . . . . . . . . : Media disconnected
   Connection-specific DNS Suffix  . :
   Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
   Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
   DHCP Enabled. . . . . . . . . . . : No
   Autoconfiguration Enabled . . . . : Yes
   

Thanks all, 
Markus Lassfolk