Helper Machine configuration for Bare Metal UPI Installation of OKD 4.15

[okdlukas]

I want to start a small OKD Cluster on a specific Network. The Configuration is as following: I have a Virtual Environment and a DHCP workplace Network with Proxmox. There i have one bootstrap node, 2 Compute und 3 Control Nodes with Fedora OS. I also setup a Helper Node with Centos 9 Stream. All Nodes are on a DHCP Network, so i do have MAC Adresses but the IP changes dynamically after some time.

All i could find on video Material and in the Documentation is that i have to setup a Node as LoadBalancer and for API/Ignition Purpose and that i could/should use the Helper Node for that matter: https://github.com/ryanhay/ocp4-metal-install/tree/master

I have difficulties to setup up the DNS Server on the helper machine. The ocp4-metal-install documentation says that i cannot install the helper on a DHCP Network but that i have to configure the helper machine as DHCP Server instead. Do i understand that correctly?

Currently i am stuck at the "Setup your Environment Vars"
How can i delegate my helper to the upstream Network?