** Description changed:
[Impact]
Systems may have NICs attached to the "platform" bus. These are NICs that are
onboard, but not attached to a PCI(-like) bus. Rather, they are described by
firmware directly. None of the naming policies enabled by Ubuntu by default
matches these NICs, so they end up having unpredictable names. In the case
where other NICs are attached (e.g. PCIe cards), the ethN enumeration race
occurs, making it impossible to have an interface name that is persistent
across reboots. That is, if you do a network install over "eth0", on reboot
that NIC now maybe "eth3", which causes it to fail to start the network on boot.
The HiSilicon D05 boards are an example of this. It has 4 onboard NICs
that are described by ACPI directly, and may also have other PCIe NICs
plugged in.
[Test Case]
Boot a system with the characteristics described above, and check to see if
any "ethN" interfaces exist.
[Regression Risk]
- TBD - depends on the proposed solution.
+ Unless one fixed the names locally with .netlink / .rules files the interface
names will change for the ACPI/platform bus network interfaces, from random
ethX names to stable names named like enaVENDORMODELiX. Thus we should check
that this update doesn't negatively break certified ARM64 platforms with: ARM,
NVIDIA, HISILICON platform bus ethernet devices.
** Changed in: systemd (Ubuntu Zesty)
Status: New => Fix Committed
** Changed in: systemd (Ubuntu Zesty)
Importance: Undecided => Medium
** Changed in: systemd (Ubuntu Zesty)
Assignee: (unassigned) => Dimitri John Ledkov (xnox)
** Changed in: systemd (Ubuntu Zesty)
Milestone: None => zesty-updates
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https://bugs.launchpad.net/bugs/1686784
Title:
no predictable names for platform (non-PCI) NICs
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