On Wed, Mar 30, 2022 at 05:35:12PM +0200, basti wrote: > as I can read here [1] network names should be stable. > (Stable interface names even when hardware is added or removed)
> [1] > https://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames/ Sorry, but you've been lied to. > What I see now is: > > When I add or remove a PCIe card (USB card) the name is changed from enp5s3 > to enp6s3 and back for example. Yes. You've now seen direct evidence of the lie. I guess I won't need to post links to the wiki articles that say the same thing you've already observed. For most people, there are two paths forward: 1) If your system has exactly one ethernet interface, and if this is not likely to change at any point in the future, you can go back to the old old way of doing things -- let the kernel assign "eth0" to the first interface it finds, "eth1" to the second interface it finds, and so on. Since it will only ever find one interface, that interface will always be named "eth0", and you can configure from there. 2) If you have multiple ethernet interfaces, or the possibility of this occurring in the future, take control of their names yourself. Set up systemd.link(5) files to assign a name to each interface based on its MAC address, or some other identifying characteristic.
