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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