On Sat, Jan 22, 2022 at 08:28:34AM +0100, Andrei POPESCU wrote: > On Lu, 17 ian 22, 22:43:49, piorunz wrote: > > > > Problem is, every now and then, Ethernet adapter name changes, from > > enp5s0 to enp6s0 for example. > > Those names are supposed to be stable.
Hahaha :) Actually, they're supposed to be /predictable/. Now assume the following situation: you've got just one USB port (Apple, I'm looking at you). Your Ethernet adapter is a dongle hanging off it. You now realize you need some USB storage to do your backups (you make backups, don't you?). You go to the shop, buy a USB hub, stick it into your port, and stick your Ethernet adapter into it, so now you have some more free USB thingies. *Poof*, your Ethernet device name changes, since, by default [1] it's named after the path in the USB device tree leading to your device. Don't forget to stick your Ethernet dongle into the same port afterwards. Else... *poof*. So... predictable, yes. Stable... is in the eye of the beholder. Me? I've decided that the whole schema is far too Rube Goldbergesque for my needs. I have "net.ifnames=0" in my Linux boot commandline (via /etc/default/grub) and made sure nothing messes with things after boot. The day this humble laptop has more than one Ethernet (or wlan) adapter, I'll cope with it. Cheers [1] https://www.man7.org/linux/man-pages/man7/systemd.net-naming-scheme.7.html#NAMING (search for "Table 2" there: gah, why don't people provide anchors -- t
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