You can configure certain vApp networks to provide DHCP services to virtual machines in the vApp.
When you enable DHCP for a vApp network, connect a NIC on virtual machine in the vApp to that network, and select DHCP as the IP mode for that NIC. VMware Cloud Director assigns a DHCP IP address to the virtual machine when you power it on.
Prerequisites
Verify that the vApp network is either routed or isolated.