Equally the way unraid reports this shows a difference:
00:1f.6 Ethernet controller [0200]: Intel Corporation Ethernet Connection (11) I219-V [8086:0d4d]
DeviceName: Onboard - Ethernet
Subsystem: Micro-Star International Co., Ltd. [MSI] Ethernet Connection (11) I219-V [1462:7c81]
Kernel driver in use: e1000e
Kernel modules: e1000e
I've highlighted a line in the working ethernet port here that is missing from the none working port
03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller [10ec:8125] (rev 04)
Subsystem: Micro-Star International Co., Ltd. [MSI] RTL8125 2.5GbE Controller [1462:7c81]
Kernel modules: r8169
Infact the Kernel module is referencing the wrong varible i believe (r8169) and it doesn't state a Kernel Driver in use..
So its very much unraid