Please describe more detail about your solution
broadcasting (port 53)
TCP/UDP port 53 is used for DNS not DHCP. If you mean DHCP broadcasting operations (like discover and request in DORA), DHCP uses UDP 67 / 68.
If the VM needs to obtain an IP address from a DHCP server it just requires to connect to the port group of a vSwitch that has at least one physical uplink (if the DHCP server is a physical system) or connect to a port group that VM of that DHCP server is connected too.
If you want to configure VLAN and need to deploy IP Helper / DHCP Relay Agent to assign IP addresses for multiple subnets, you need to configure VLAN ID for each of the port groups that VMs are connected to tag their frame...