this post was submitted on 14 Dec 2023
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Non-Realtek NIC Recommendations (lemmy.procrastinati.org)
submitted 11 months ago by SeeJayEmm@lemmy.procrastinati.org to c/selfhosted@lemmy.world
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Since switching to Proxmox I've noticed an issue with intermittent network connectivity on my VMs. I've narrowed it down to the realtek based PCI NIC (Rosewill RNG-407-Dualv2) I currently have installed. Basically when I see a ton of these in my syslog:

Dec 14 13:55:37 server kernel: r8169 0000:09:00.0 enp9s0: rtl_rxtx_empty_cond == 0 (loop: 42, delay: 100).

It means it's time to reboot. I did some digging on it and it appears to be a kernel driver issue. Unless someone in this community has encountered this and knows of a good fix (other than rebooting) I'd rather just ditch Realtek and replace the NIC.

Can anyone recommend a 2 port PCIe (x1) card that has good driver support under Linux and (hopefully) won't cost me a small fortune? Bonus points if it's 2.5GbE capable.

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[–] poVoq@slrpnk.net 2 points 11 months ago* (last edited 11 months ago) (1 children)

For older Gbit intel NICs have a look here: https://forums.serverbuilds.net/t/demystifying-intel-pro-1000-quad-port-nics/2401

Especially the virtual nic support used by VMs is only optimized on some of their chipsets.

I hear the latest two 2.5gbit capable generations from Intel have some stability issue though, but I didn't have the chance to dig into it. Probably still better than Realtek NICs though.

[–] SeeJayEmm@lemmy.procrastinati.org 1 points 11 months ago

That's a useful post. Thanks.