Public bug reported:

---Problem Description---
qeth on a DPM-managed IBM Z machine does not obtain its MAC Address for L2 OSD 
interfaces from the OSA Network Adapter. Instead it uses a random MAC Address.

This causes connectivity issues in setups where a reliable & pre-determined MAC 
Address is required - ie. when doing network configuration via DHCP.
 
---uname output---
Ubuntu 18.04 / vmlinuz-4.15.0-101-generic
 
Machine Type = IBM z14 GA2 
 
---Debugger---
A debugger is not configured
 
---Steps to Reproduce---
 - Bring up a qeth L2 OSD interface in DPM-managed LPAR.
- Inspect the interface's MAC Address. It should be the same as displayed in 
the DPM Panels.
 
Stack trace output:
 no
 
Oops output:
 no
 
System Dump Info:
  The system is not configured to capture a system dump.
 
-Attach sysctl -a output output to the bug.


Backport of "s390/qeth: improve fallback to random MAC address"


Backport of "s390/qeth: utilize virtual MAC for Layer2 OSD devices"


This ticket is for 18.04 only. Already available with 20.04

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: Skipper Bug Screeners (skipper-screen-team)
         Status: New


** Tags: architecture-s39064 bugnameltc-185982 severity-high 
targetmilestone-inin18044

** Tags added: architecture-s39064 bugnameltc-185982 severity-high
targetmilestone-inin18044

** Changed in: ubuntu
     Assignee: (unassigned) => Skipper Bug Screeners (skipper-screen-team)

** Package changed: ubuntu => linux (Ubuntu)

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https://bugs.launchpad.net/bugs/1880834

Title:
  qeth: utilize virtual MAC for Layer2 OSD devices

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