[Bug 1803203] Re: Support preferred_lft for IPv6 addresses

[Launchpad Bug Tracker]

This bug was fixed in the package netplan.io - 0.100-0ubuntu4

---------------
netplan.io (0.100-0ubuntu4) groovy; urgency=medium

  * debian/tests/cloud-init
    - Improve reboot test to avoid failure on arm64

 -- Lukas Märdian <lukas.maerdian at canonical.com>  Mon, 21 Sep 2020
12:23:02 +0200

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

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https://bugs.launchpad.net/bugs/1803203

Title:
  Support preferred_lft for IPv6 addresses

Status in netplan:
  New
Status in netplan.io package in Ubuntu:
  Fix Released
Status in systemd package in Ubuntu:
  Fix Released

Bug description:
  There doesn't currently seem to be any way to set the preferred_lft of
  an IPv6 address.

  With the "ip" command it might be, for example:

  # ip address add 2001:db8::2/32 dev eth0 preferred_lft 0

  In a systemd unit file it might be:

  [Match]
  Name=eth0

  [Network]
  Address=2001:db8::2/32
  Gateway=2001:db8::1/32
  PreferredLifetime=0

  but I can't find any way to express this with netplan.

  This is commonly used for per-service IP addresses that should never
  be used as source addresses for outgoing traffic.

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