[Bug 1817655] Re: NetworkManager renderer broken on NM version 1.15.2 or later (Ubuntu 19.04 Disco)

[Brian Murray]

** Also affects: netplan.io (Ubuntu Disco)
   Importance: Critical
       Status: Confirmed

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https://bugs.launchpad.net/bugs/1817655

Title:
  NetworkManager renderer broken on NM version 1.15.2 or later (Ubuntu
  19.04 Disco)

Status in netplan:
  In Progress
Status in netplan.io package in Ubuntu:
  Confirmed
Status in netplan.io source package in Disco:
  Confirmed

Bug description:
  NetworkManager 1.15.2 or later (as included first in Ubuntu 19.04 Disco Dingo) now requires that files in /{etc,run}/NetworkManager/system-connections end in the suffix '.nmconnection' as per the following commit:
  https://github.com/NetworkManager/NetworkManager/commit/648c256b9014198aac388097e410999c68c4b452

  NetPlan writes files as /run/NetworkManager/system-connections/{name}
  without any suffix. On Ubuntu 19.04 these files are ignored and the
  configuration is not applied.

  If you rename the files to end in '.nmconnection' then you can see the
  interface configuration loaded by NetworkManager.

  
  root at optane:/run/NetworkManager/system-connections# ls
   netplan-eno1   virbr0.nmconnection  'Wired connection 1.nmconnection'  'Wired connection 2.nmconnection'

  root at optane:/run/NetworkManager/system-connections# cat /etc/netplan/03-netcfg.yaml 
  # This file describes the network interfaces available on your system
  # For more information, see netplan(5).
  network:
    version: 2
    renderer: NetworkManager
    ethernets:
      eno1:
        addresses: [10.48.134.22/25]
        gateway4: 10.48.134.1
        nameservers:
          addresses: [10.48.134.6]

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