Public bug reported:

Every time my VM boots (it was deployed via MAAS), cloud-init will
attempt to rename interfaces despite the system being configured
differently in /etc/netplan/*.yaml --

Whatever config may be in /etc/netplan, the original name of the
interfaces at deployment will be forced by cloud-init via a call to 'ip
link set X name Y'.

My netplan config and 50-curtin-networking.cfg are attached -- 50
-curtin-networking.cfg was modified to use the 'cloud1' name rather than
the original 'ens6' to more clearly show the extra renaming that
happens.

ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: cloud-init 18.2-41-g3b712fce-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-21.22-generic 4.15.17
Uname: Linux 4.15.0-21-generic x86_64
ApportVersion: 2.20.10-0ubuntu2
Architecture: amd64
CloudName: MAAS
Date: Fri May 25 15:10:20 2018
PackageArchitecture: all
ProcEnviron:
 TERM=linux
 PATH=(custom, no user)
 LANG=C.UTF-8
 SHELL=/bin/bash
SourcePackage: cloud-init
UpgradeStatus: No upgrade log present (probably fresh install)
user_data.txt:

** Affects: cloud-init (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug cosmic third-party-packages uec-images

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https://bugs.launchpad.net/bugs/1773397

Title:
  cloud-init renames interfaces at every boot

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