Your message dated Wed, 21 Feb 2018 16:21:53 +0100
with message-id <1d407861-de48-2a54-5d66-3082b91a7...@debian.org>
and subject line Re: Bug#890986: BIOS upgrade change main ethernet device name
/ regression from previous debian versions
has caused the Debian Bug report #890986,
regarding BIOS upgrade change main ethernet device name / regression from
previous debian versions
to be marked as done.
This means that you claim that the problem has been dealt with.
If this is not the case it is now your responsibility to reopen the
Bug report if necessary, and/or fix the problem forthwith.
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890986: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=890986
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--- Begin Message ---
Package: udev
Version: 232-25+deb9u1
Severity: normal
On a Asrock AB350 Gaming K4 motherboard based machine
running debian stretch we upgraded BIOS from P3.00 to P4.60 and this
changed the integrated motherboard ethernet device name from enp10s0 to
enp37s0. As a consequence we lost network connectivty and had to edit
configuration files.
Initial BIOS:
r8169 0000:0a:00.0 enp10s0: renamed from eth0
New BIOS:
r8169 0000:25:00.0 enp37s0: renamed from eth0
On older versions debian /etc/udev/rules.d/70-persistent-net.rules
would have made the ethernet device name constant and we would
not have lost network connectivity, so the current state of udev is an
unfortunate regression.
Is there a way to force generation of 70-persistent-net.rules?
Thanks in advance,
Sincerely,
Laurent
--- End Message ---
--- Begin Message ---
Am 21.02.2018 um 11:13 schrieb Laurent GUERBY:
> Package: udev
> Version: 232-25+deb9u1
> Severity: normal
>
> On a Asrock AB350 Gaming K4 motherboard based machine
> running debian stretch we upgraded BIOS from P3.00 to P4.60 and this
> changed the integrated motherboard ethernet device name from enp10s0 to
> enp37s0. As a consequence we lost network connectivty and had to edit
> configuration files.
>
> Initial BIOS:
> r8169 0000:0a:00.0 enp10s0: renamed from eth0
>
> New BIOS:
> r8169 0000:25:00.0 enp37s0: renamed from eth0
That's very unfortunate, unfortunately we can't really fix that in systemd.
> On older versions debian /etc/udev/rules.d/70-persistent-net.rules
> would have made the ethernet device name constant and we would
> not have lost network connectivity, so the current state of udev is an
> unfortunate regression.
>
> Is there a way to force generation of 70-persistent-net.rules?
No, but you can setup your own naming scheme, matching on whatever you
see fit, including the MAC address.
Say I wanted to name my ethernet device net0, then you could setup
something like
$ cat /etc/systemd/network/70-net.link
[Match]
MACAddress=00:11:22:33:44:55:66
[Link]
Name=net0
If you are going to rename network interfaces, don't reuse the kernel
provided names, i.e. ethX and wlanX, as this is inherently racy.
See man systemd.link for more information on this.
If you are sure, that your system will only ever have a single network
interface, you can also disable the new default network interface naming
scheme and use the kernel provided names. See
/usr/share/doc/udev/README.Debian.gz → "Network interface naming"
Let me repeat: Using the kernel provided names is probably only a good
idea if you have a single network interface. With multiple interfaces,
you have no guarantee in which order they are enumerated and named.
I'm closing this bug report, as unfortunately there is nothing really
that systemd/udev can do, if your bios update has such effects.
Regards,
Michael
--
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