@olivierlambert Great to know it's not something I was doing wrong! Hopefully these other cards I have ordered will afford me more luck! Cheers

@olivierlambert Great to know it's not something I was doing wrong! Hopefully these other cards I have ordered will afford me more luck! Cheers

@Andrew Cheers

Trying this
https://www.amazon.co.uk/dp/B0CBX9MNXX

And will give this a go which other people seem to have success with!
https://www.aliexpress.com/item/1005008790660980.html

@Andrew Ah fair enough re firmware & not testing with 8.3, appreciate the assistance :)ping

Without the alt driver it showed up as 'driver:r8125' and 'version:9.012.04-NAPI-PTP-RSS' with 'firmware-version: rtl8125b-2_0.0.2 07/13/20' when running 'ethtool -i eth4'.

static IPv4 made no difference, the static assigns but cannot ping gateway or external 8.8.8.8

I had an ubuntu 24.04 to hand and while the network adapter shows up there it also does not seem to work... would purchasing an I225-V or i226 afford me better luck?

lspci:

00:00.0 Host bridge: Intel Corporation 8th Gen Core Processor Host Bridge/DRAM Registers (rev 07)
00:01.0 PCI bridge: Intel Corporation 6th-10th Gen Core Processor PCIe Controller (x16) (rev 07)
00:02.0 VGA compatible controller: Intel Corporation CoffeeLake-S GT2 [UHD Graphics 630]
00:08.0 System peripheral: Intel Corporation Xeon E3-1200 v5/v6 / E3-1500 v5 / 6th/7th/8th Gen Core Processor Gaussian Mixture Model
00:14.0 USB controller: Intel Corporation Cannon Lake PCH USB 3.1 xHCI Host Controller (rev 10)
00:14.2 RAM memory: Intel Corporation Cannon Lake PCH Shared SRAM (rev 10)
00:16.0 Communication controller: Intel Corporation Cannon Lake PCH HECI Controller (rev 10)
00:17.0 SATA controller: Intel Corporation Cannon Lake PCH SATA AHCI Controller (rev 10)
00:1b.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #21 (rev f0)
00:1c.0 PCI bridge: Intel Corporation Cannon Lake PCH PCI Express Root Port #6 (rev f0)
00:1f.0 ISA bridge: Intel Corporation 300 Series Chipset Family LPC Controller (rev 10)
00:1f.3 Audio device: Intel Corporation Cannon Lake PCH cAVS (rev 10)
00:1f.4 SMBus: Intel Corporation Cannon Lake PCH SMBus Controller (rev 10)
00:1f.5 Serial bus controller: Intel Corporation Cannon Lake PCH SPI Controller (rev 10)
00:1f.6 Ethernet controller: Intel Corporation Ethernet Connection (7) I219-V (rev 10)
01:00.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch
02:01.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch
02:02.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch
02:03.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch
02:04.0 PCI bridge: Pericom Semiconductor PI7C9X2G608GP PCIe2 6-Port/8-Lane Packet Switch
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
06:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8125 2.5GbE Controller (rev 05)
07:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983
08:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78)

@Andrew

I am experiencing an issue with the RTL8125 Rev5 2.5G 4 port. My xcp-ng (8.3) host (Lenovo M720q) shows the NICs under 'Display NICs' and shows connected when I plug in an RJ45 cat6, but my router will only give out an IPV6 address, not IPV4 when looking at the DHCP scopes. (IPV4 is enabled on the router and works with everything else, including the onboard Intel Gigabit e1000e).

'ethtool -i eth4' shows 'driver:r8125' and 'version:9.016.01-NAPI-PTP-RSS' with 'firmware-version: rtl8125b-2_0.0.2 07/13/20'. (I installed your r8125-module-alt from your website)

I have not done a firmware update yet so might that help?

This is a completely fresh install of xcp-ng so I can purge it and re-install or ty any suggestions