On Fri, Sep 26, 2014 at 3:07 AM, Neil Bothwick <n...@digimed.co.uk> wrote: > On Fri, 26 Sep 2014 05:27:15 +0200, Alan McKinnon wrote: > >> > I buy machines with one ethernet interface. What I find >> > particularly annoying is this doublespeak about calling it >> > "predictable". Before the change, it was predicatbly "eth0". Now, >> > it's different on every different model. > >> It's not doublespeak, the interfaces are named exactly according to >> where they are on the PCI bus. If you had two interfaces, they show up >> to the kernel in random order by time and sometimes eth0/eth1 are nto >> the same they were before the reboot. > > That may be true for PCI devices but not for USB ones. If you unplug a > USB device and plug it back into the same port, it will get a different > device number. The naming is more predictable, but it's not there yet.
That doesn't sound right. If unplugging a USB net device and plugging it again *in the same port* results in a different device *name*, then it is a bug and should be reported; the description of the algorithm in [1] sounds like it should get always the same name for the same port, unless I'm misunderstanding something. Regards. [1] http://cgit.freedesktop.org/systemd/systemd/tree/src/udev/udev-builtin-net_id.c#n51 -- Canek Peláez Valdés Profesor de asignatura, Facultad de Ciencias Universidad Nacional Autónoma de México
