Idea about DHCP in clusters

[TerenceS79]

I've had an idea but haven't thought it through in too much detail. I know clustering doesn't currently support the DHCP Server function, but here's my idea.

Could the cluster-join process possibly do this, as an easy 'High availability' DHCP method?

1. Detect the primary node's current DHCP scope(s), determine their start and end addresses (for example, .100 to .199), and split it down the middle
2. Adjust the primary node's scope to half the addresses (so .100 to .149)
3. On the secondary node, create a scope with all the same options like exclusions or reservations, etc.
4. Adjust the secondary node's scope to the other half of the leased addresses (.150 to .199)
5. Enable / apply the configs on primary and then secondary nodes

This way, we'd effectively have 2 DHCP servers, each serving half of the addresses, and no need for any complexity across them. The "Use this DNS Server" option should then help clients to point to the surviving node which gives them the DHCP address, and at worst they'd auto-correct once they broadcast for DHCP address renewal.

Might be easy to procedurally tackle this in the code, as a simple way to 'cluster' DHCP Server features of Technitium? Open to suggestions and feedback.