Bug 65079

Summary:	predictable network interface names are not persistent in udev-200
Product:	systemd	Reporter:	Ilya Lebedev <ilya>
Component:	general	Assignee:	systemd-bugs
Status:	RESOLVED NOTOURBUG	QA Contact:	systemd-bugs
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	x86 (IA32)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Ilya Lebedev 2013-05-28 13:36:32 UTC

As stated in http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames
> Stable interface names even when hardware is added or removed, i.e. no re-enumeration takes place

But this is wrong for my hardware.
MB: M4A88TD-M EVO/USB3 (AMD 880G/SB850)
Net1: Realtek® 8111E (built-in)
Net2: 3COM 3C905B-TX (PCI)
Net3: D-LINK DGE-560T/B1A (PCIe)

For configuration MB+Net1+Net2 I see the following names:
Net1: enp4s0
Net2: enp5s5

For configuration MB+Net1+Net2+Net3 I see the following names:
Net1: enp5s0
Net2: enp6s5
Net3: enp3s0

OS: Gentoo linux 3.7.10
Udev: 200

Comment 1 Kay Sievers 2013-09-12 18:31:04 UTC

This happens with some firmwares, it's relatively rare though. There is
nothing we can do about, the firmware just re-numbers the PCI devices.

This can also happen with BIOS updates, or any other major hardware
re-configuration.

This is not a bug we could handle in any way, it just happens and we need
to accept that, sorry.

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