Bug#1063151: igb: unpredictable interface names for four port nic

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From	Václav Ovsík <vaclav.ovsik@i.cz>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1063151: igb: unpredictable interface names for four port nic
Date	Tue, 06 Feb 2024 16:50:01 +0100
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Dear Valentin,

On Tue, Feb 06, 2024 at 03:58:45PM +0100, Valentin wrote:
> I suspect the issue might be somewhere in your udev configuration.
> 
> You can get the evaluated udev rules by running 'udevadm test <device path>'
> 
> So running 'udevadm test /sys/class/net/ens6f2' and 'udevadm test /sys/class/
> net/eth0' and comparing outputs should tell you/everyone else whats different 
> for those devices and why they use different naming schemes.

Output of both commands attached…

> The old ethX names depend on the order of initialization and is therefore 
> unstable.
> The new format (e.g. ens6f2) depends on pci device numbers and is stable.

Yes, unstable are old names, right

Some errors are reported for eth0 interface:

  eth0: Policy *slot* yields "ens6f0".
  eth0: Could not set AlternativeName= or apply AlternativeNamesPolicy=, ignoring: File exists
  eth0: /usr/lib/udev/rules.d/80-net-setup-link.rules:11 NAME 'ens6f0'
  eth0: /usr/lib/udev/rules.d/99-systemd.rules:68 RUN '/lib/systemd/systemd-sysctl --prefix=/net/ipv4/conf/$name --prefix=/net/ipv4/neigh/$name --prefix=/net/ipv6/conf/$name --prefix=/net/ipv6/neigh/$name'
  eth0: sd-device: Created db file '/run/udev/data/n69' for '/devices/pci0000:00/0000:00:1c.0/0000:01:00.0/net/eth0'
  ens6f0: Failed to rename network interface 69 from 'eth0' to 'ens6f0': File exists

The bug should be reassigned to udev.

Thank you very much for tip!
-- 
Zito

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Bug#1063151: igb: unpredictable interface names for four port nic Valentin <valentin@ominous.space> - 2024-02-06 16:10 +0100
  Bug#1063151: igb: unpredictable interface names for four port nic Václav Ovsík <vaclav.ovsik@i.cz> - 2024-02-06 16:50 +0100

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