[Bug 2013532] Re: netplan ignores routes

[Lukas Märdian]

** Also affects: netplan.io (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: netplan.io (Ubuntu Kinetic)
   Importance: Undecided
       Status: New

** Also affects: netplan.io (Ubuntu Jammy)
   Importance: Undecided
       Status: New

** Changed in: netplan.io (Ubuntu)
       Status: New => Fix Released

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Title:
  netplan ignores routes

Status in netplan:
  Fix Released
Status in netplan.io package in Ubuntu:
  Fix Released
Status in netplan.io source package in Jammy:
  New
Status in netplan.io source package in Kinetic:
  New

Bug description:
  I have 2 files in /etc/netplan. One is generated by cloud-init
  (50-cloud-init.yaml), but it is not complete. Therefore I added a
  second file (60-static.yaml) to supply IPv6 address and default route.
  Cloud-init doesn't have this information, or ignores it (that is not
  the issue here).

  When "netplan generate" or "netplan get" runs, it ignores the route
  from the second file.

  Example:

  # This file is generated from information provided by the datasource.  Changes
  # to it will not persist across an instance reboot.  To disable cloud-init's
  # network configuration capabilities, write a file
  # /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
  # network: {config: disabled}
  network:
      version: 2
      ethernets:
          net0:
              addresses:
              - 1.1.1.1/24    # not the real address of course
              match:
                  macaddress: 11:11:11:11:11:11
              nameservers:
                  addresses:
                  - 8.8.8.8
                  - 8.8.4.4
                  search: []
              routes:
              -   to: default
                  via: 1.2.3.4
              set-name: net0

  The other file 60-static.yaml:

  network:
      version: 2
      ethernets:
          net0:
              addresses:
              - "2a02:eeee:eeee:eeee::2/64"
              routes:
              - to: "::/0"
                via: 2a02:eeee:eeee:eeee::1
                on-link: true

  
  When getting the configuration:

  $ netplan get
  network:
    version: 2
    ethernets:
      net0:
        match:
          macaddress: "11:11:11:11:11:11"
        addresses:
        - "1.1.1.1/24"
        - "2a02:eeee:eeee:eeee::2/64"
        nameservers:
          addresses:
          - 8.8.8.8
          - 8.8.4.4
          search: []
        set-name: "net0"
        routes:
        - to: "default"
          via: "1.2.3.4"

  The route from the second file is completely ignored.

  Strangely enough, if you list multiple routes in the second file, the
  result does contain all of them.

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