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[James Falcon <1981646@xxxxxxxxxxxxxxxxxx>]

The cloud-init side of this is is available on Ubuntu 23.04+. Older
releases will not see this functionality as to not break backwards
compatibility.

Change landed in https://github.com/canonical/cloud-init/pull/1891 .

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

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https://bugs.launchpad.net/bugs/1981646

Title:
  network v2: do not render world-readable netplan when wifi or auth
  config contains sensitive passwords

Status in cloud-init:
  Fix Released
Status in netplan:
  Triaged

Bug description:
  https://netplan.io/reference/ supports wifi password and auto client-
  key-password keys which should generally not be world-readable.

  
  But, when rendering passthrough V2 network configuration, cloud-init emits a single /etc/netplan/50-cloud-init.yaml file that is world readable.

  If network v2 config contains sensitive password keys it may make
  sense for cloud-init to either:

  1. Make /etc/netplan/50-cloud-init.yaml only root-readable
  - OR -
  2. Write a world-readable /etc/netplan/50-cloud-init.yaml containing all keys except wifis and auth  and a root-readable /etc/netplan/50-cloud-init-sensitive.yaml  which would contain any security sensitive config content.

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