Re: [bitfolk] Debian 10 upgrade and udev network name

Hi Alastair, On Mon, Apr 13, 2020 at 10:18:32AM +0100, Alastair Sherringham wrote: Since the MAC addresses and interface names are fixed in the config on BitFolk's side, interface names are stable inside the VMs and eth0 will always be eth0. I've installed Debian 10 in BitFolk VMs many times and upgraded to it many times and it's never changed away from eth0. Here's something I wrote to another customer who asked: Based on a Xen guest's device directory in sysfs being something like: /sys/devices/vif-0/net/eth0/ …then on second look it seems that here: https://github.com/systemd/systemd/blob/master/src/udev/udev-builtin-net_id… …it just doesn't fall into any of the existing categories except for MAC-based, which as you say is disabled by default. Specifically, it is not considered PCI because it's on a bus called "vif-0" or whatever, not "pci". I suppose it is possible that in future Xen could change something here, or udev could add an extra test. If you are worried about this then I think you could do one of several things, such as: - Use the net.ifnames=0 kernel command line option to disable any future renaming. - Enable the MAC-based device naming; your MAC address will not change for the life of the account. - Add a udev rule to rename based on MAC address to something you choose. So I don't think you need to do anything at all. On bare metal or a KVM guest it would probably be a different story. Cheers, Andy -- https://bitfolk.com/ -- No-nonsense VPS hosting _______________________________________________ users mailing list users(a)lists.bitfolk.com https://lists.bitfolk.com/mailman/listinfo/users *Attachments:* * signature.asc