Re: Proposal: enable stateless persistant network interface names
On Fri, 8 May 2015 07:59:31 +0200, Martin Pitt <mpitt@debian.org>
wrote:
>Details about [ifnames]
>-----------------------
>This is a generic solution which extends the [biosdevname] idea and
>thus applies to all practical cases and all architectures. It doesn't
>need any persistant state (i. e. dynamic /etc/udev/rules.d/) and thus
>applies nicely to snappy/touch, and also avoids the race condition.
>
>The main downside is that by nature the device names are not familiar
>to current admins yet. For BIOS provided names you get e. g. ens0, for
>PCI slot names enp1s1 (ethernet) or wlp3s0 (wlan). But that's a
>necessary price to pay (biosdevname names look similar).
>
>As this hasn't been discussed yet, Debian and Ubuntu disable this by
>default. You can opt into this by booting with "net.ifnames=1" (which
>is a patch against upstream: there you disable it by booting with
>net.ifnames=0 or disabling 80-net-setup-link.rules).
>
>Proposal
>--------
>I propose to retire [mac], i. e. drop
>/lib/udev/rules.d/75-persistent-net-generator.rules and enable
>[ifnames] by default.
I have tried this just last week and have found it kind of
unsatisfactory that it doesn't work in virtualized environments. For
example, in a KVM VM with virtio ethernet, the network devices still
end up in the system as eth0, eth1, eth2.
Greetings
Marc
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