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Re: How to avoid systemd/udev unpredictable NIC names

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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.

For systemd-networkd

/etc/systemd/network/my.network

[Match]
MACAddress=ab:cd:ef:12:34:56

[Network]
Address=192.168.1.123/24
Gateway=192.168.1.1
DNS=192.168.1.1

and enable systemd-networkd (and optionally systemd-resolved), see 
/usr/share/doc/systemd/README.Debian.gz for more info.


Kind regards,
Andrei
-- 
http://wiki.debian.org/FAQsFromDebianUser

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Thread

How to avoid systemd/udev unpredictable NIC names Steve Keller <keller.steve@gmx.de> - 2021-08-30 22:40 +0200
  Re: How to avoid systemd/udev unpredictable NIC names Greg Wooledge <greg@wooledge.org> - 2021-08-30 23:00 +0200
    Re: How to avoid systemd/udev unpredictable NIC names Andrei POPESCU <andreimpopescu@gmail.com> - 2021-08-31 12:50 +0200
      Re: How to avoid systemd/udev unpredictable NIC names Greg Wooledge <greg@wooledge.org> - 2021-08-31 13:40 +0200
      Re: How to avoid systemd/udev unpredictable NIC names Reco <recoverym4n@enotuniq.net> - 2021-08-31 16:00 +0200
        Re: How to avoid systemd/udev unpredictable NIC names Andrei POPESCU <andreimpopescu@gmail.com> - 2021-09-01 19:30 +0200
  Re: How to avoid systemd/udev unpredictable NIC names Dan Ritter <dsr@randomstring.org> - 2021-08-30 23:10 +0200
    Re: How to avoid systemd/udev unpredictable NIC names Dan Ritter <dsr@randomstring.org> - 2021-08-30 23:30 +0200
    Re: How to avoid systemd/udev unpredictable NIC names Greg Wooledge <greg@wooledge.org> - 2021-08-30 23:30 +0200
      Re: How to avoid systemd/udev unpredictable NIC names IL Ka <kazakevichilya@gmail.com> - 2021-08-30 23:50 +0200
        Re: How to avoid systemd/udev unpredictable NIC names Greg Wooledge <greg@wooledge.org> - 2021-08-31 00:10 +0200
          Re: How to avoid systemd/udev unpredictable NIC names Steve Keller <keller.steve@gmx.de> - 2021-08-31 02:10 +0200
            Re: How to avoid systemd/udev unpredictable NIC names Greg Wooledge <greg@wooledge.org> - 2021-08-31 02:50 +0200
              Re: How to avoid systemd/udev unpredictable NIC names Tixy <tixy@yxit.co.uk> - 2021-08-31 22:10 +0200
        Re: How to avoid systemd/udev unpredictable NIC names Thomas Hochstein <thh@thh.name> - 2021-08-31 00:50 +0200
      Re: How to avoid systemd/udev unpredictable NIC names Steve Keller <keller.steve@gmx.de> - 2021-08-31 01:30 +0200
        Re: How to avoid systemd/udev unpredictable NIC names <tomas@tuxteam.de> - 2021-08-31 08:30 +0200
        Re: How to avoid systemd/udev unpredictable NIC names Andrei POPESCU <andreimpopescu@gmail.com> - 2021-08-31 12:50 +0200
        Re: How to avoid systemd/udev unpredictable NIC names David Wright <deblis@lionunicorn.co.uk> - 2021-08-31 16:30 +0200
  Re: How to avoid systemd/udev unpredictable NIC names IL Ka <kazakevichilya@gmail.com> - 2021-08-30 23:30 +0200
  Re: How to avoid systemd/udev unpredictable NIC names Roberto C. Sánchez <roberto@debian.org> - 2021-08-31 01:30 +0200
    Re: How to avoid systemd/udev unpredictable NIC names Steve Keller <keller.steve@gmx.de> - 2021-08-31 02:10 +0200
  Re: How to avoid systemd/udev unpredictable NIC names George Shuklin <george.shuklin@gmail.com> - 2021-08-31 15:50 +0200

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