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[Scott Moser <ssmoser2+ubuntu@xxxxxxxxx>]

This bug is believed to be fixed in cloud-init in version 18.4. If this
is still a problem for you, please make a comment and set the state back
to New

Thank you.

** Changed in: cloud-init
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/1768547

Title:
  OpenNebula DataSource adds null gateway6 to netplan config

Status in cloud-init:
  Fix Released
Status in cloud-init package in Ubuntu:
  Confirmed

Bug description:
  Hello,

  In Ubuntu 18.04 with cloud-init 18.2-14-g6d48d265-0ubuntu1, the OpenNebula data source generates an invalid netplan yaml file if the IPv6 gateway is not defined in context.sh:
  network:
      ethernets:
          eth0:
              addresses:
              - 10.22.33.44/22
              gateway4: 10.22.33.1
              gateway6: null
              match:
                  macaddress: 02:00:00:00:aa:bb
              nameservers:
                  addresses:
                  - 10.22.22.22
                  - 10.33.33.33
      version: 2

  Netplan will not apply this config:
  # netplan try
  Error in network definition //etc/netplan/50-cloud-init.yaml line 11 column 22: invalid IPv6 address 'null'

  This is due to a typo in DataSourceOpenNebula.py, attached is a patch
  which fixes it.

  Cheers,
  Corey Melanson

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