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Ethernet interface name changed after changing CPU (programming.dev)

submitted 2 weeks ago by emotional_soup_88@programming.dev to c/linuxquestions@lemmy.zip

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I'm putting this out here just in case somebody else would be looking for it:

I put away my dear beloved an AMD 5800X3D CPU and my Nvidia RTX 3080 GPU because I'm taking a break from gaming. Instead, I installed a 5700G to conserve power. Upon booting for the first time, I had no internet connection. A quick glance at ip link and I noticed that the Ethernet interface no longer is called enp6s0 but enp5s0. Updating the interface name in my network config files solved the problem.

As a bonus, both the hardware and system clocks were also all over the place until I adjusted them...

I have no idea why a new CPU comes with these phenomena, but it did.

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[–] ikidd@lemmy.world 3 points 2 weeks ago

You're pretty much left with something like this for aliasing network names:

https://wiki.debian.org/NetworkInterfaceNames#CUSTOM_SCHEMES_USING_.LINK_FILES

You're fine with your setup there, but this is a major pain in the ass when you've hardcoded interfaces in a firewall conf or something.