our DHCP scope options ticked are the following:
enable DNS dynamically updates according... (ticked
always dynamically update DNS A and PTR records (ticked)
Discard A and PTR records when lease is deleted (Ticked)
Dynamically update DNS A and PTER records for DHCP (Ticked)
your issue sounds like this:
http://www.virtuallygeeky.com/2012/06/vmware-view-composer-linked-clones-dhcp.html#comment-form