On Thu, Nov 12, 2015 at 10:13 AM, Matthew Hall <mh...@mhcomputing.net> wrote: > On Thu, Nov 12, 2015 at 10:37:56AM +0100, Lennart Poettering wrote: >> Since time began eth* is where the kernel automatically picked iface >> names from. If you want to assign your own names go for some other >> namespace, or be prepared to race against the kernel, and deal with >> it. > > Again, this logic worked well when the level of dynamism was lower.
I think I see where you're coming from... Some distributions (in my recollection, RHEL) would use weird tricks to keep interface ordering stable while still keeping the eth0, eth1, ethX names. If I recall correctly, RHEL's /etc/init.d/network would try to match interface names from /etc/sysconfig/networking-scripts/ifcfg-ethX to the MAC address listed inside that configuration file. If it had to switch it from, say, eth0 to eth1, it would do weird tricks such as looking whether eth1 existed already, then rename it to tmp98765 with a random number, then rename eth0 to eth1. In many cases, something would go awry and you would end up with an interface named tmp98765. As you can imagine, this was fraught with problems and race conditions. It doesn't really work when you're trying to boot with as much parallelism (which is something we aim for these days) or even hot plug new interfaces... > But now the level of dynamism is higher and different principles should apply. Yes. I'd say that's a good thing. > You aren't thinking very much about how it will work for newer users. New users mostly don't care... I really think retraining your fingers from eth -> enp or whatever you pick, net, lan, wired, etc. is probably much easier than trying to preserve a relic of a name that mostly serves no purpose these days... As mentioned, keeping it is not simple since it's still the dumping ground for the kernel (and that's unlikely to change), avoiding the race with the kernel is much better than trying to deal with it, the complexity is just not worth it... I hope you get to see the light! Cheers! Filipe _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel