Re: How to avoid systemd/udev unpredictable NIC names
On Tue, Aug 31, 2021 at 01:32:32PM +0300, Andrei POPESCU wrote:
> On Lu, 30 aug 21, 16:41:39, Greg Wooledge wrote:
> > On Mon, Aug 30, 2021 at 10:20:46PM +0200, Steve Keller wrote:
> > > I plan to upgrade a server from Debian stretch to buster. Having read
> > > the release notes I wonder what's the best way to avoid the new scheme
> > > of unpredictable network interface names.
> >
> > You say "server", so I'm guessing it has more than one NIC. That means
> > the old way (net.ifnames=0) is not viable.
> >
> > Your best strategy is to create systemd.link(5) files, and give the NICs
> > the names you want them to have, based on their MAC addresses.
> >
> > For example:
> >
> > unicorn:~$ cat /etc/systemd/network/10-lan0.link
> > [Match]
> > MACAddress=18:60:24:77:5c:ec
> >
> > [Link]
> > Name=lan0
>
> Another completely different approach is to use some other tool to
> configure your network that can match on MAC address and just ignore the
> names completely.
Surely you meant ifupdown.
auto mac/ab:cd:ef:12:34:56/=eth0
iface eth0 inet static
address 192.168.1.123/24
gateway 192.168.1.1
dns-nameservers 192.168.1.1
And there's a small bonus of having to enable systemd-networkd and
optionally systemd-resolved.
This example was helpfully provided by
/usr/share/doc/ifupdown/examples/pattern-matching.
Reco
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