I have the same issue with the i225-LM NICs on the Intel NUC 11 Gen. (BNUC11TNHV50L00) with Proxmox VE 6.4-1. I have tested it with the latest 5.11-21 kernel and also tested with 5.12-11 kernel.
I used a VM with pfSense CE v2.5.1 and did a basic setup for testing. The WAN (i225-LM) works and...
