Puzzled Hyper-v Setup

Hello,

I am puzzled with one of the strange behavior and spent a day troubleshooting but no luck .My setup is fairly moderate , I have staged Hyper-v role on Windows server 2012 and have 3 VM's configured for Domain controller + DNS , SCVMM, SCVMM DB.

I have 2 physical NICs ( Internet facing ). both the NIC's has private IP

Hyper-v --> Router --> internet

I have created 1 Internal NIC with 10.x.x.x (class A )

   Hyper-v server = 10.1.1.1

    DC+ DNS = 10.1.1.2

    SCVMM = 10.1.1.3

    MSSQL = 10.1.1.4

I successfully added Hyper-v server to AD domain  but it never gets registered in DNS server ( very strange )

Hyper-v 10.1.1.1 points to 10.1.1.2

SCVMM 10.1.1.3 points to 10.1.1.2

MSSQL 10.1.1.4 points to 10.1.1.2

MSSQL and SCVMM registers automatically ( Dynamically ) to DNS server , but not the HYper-v

My SCVMM fails to identify the Hyper-v host which is embarrassing .

I deleted DNS zone, checked for duplicate records in ADSI , deleted netlogon and recreated them - no luck

I am able to perform nslookup from Hyper-v host to DC successfully , its just this adapter never gets register

any help would be appreciated