Here is my lab setup!!
Installed Windows 2008 R2
Added Microsoft Loopback adapter (No any other Network Adapter available)
Configured TCP/IP
Promoted as DC
Installed roles DNS, WDS, DHCP and Hyper-V too.
nslookup resolves the hostname correctly.
WDS configured with all needed settings.
DHCP is configured with Scope and Option 60 also configured.
Referred blog site to configure Legacy Network Adapter to boot PXE for Guest OS
Error noticed while Guest OS deploy: PXE-E51: No DHCP or proxyDHCP offers were received.
Requesting experts support as well as solution....