Public bug reported:
MTU values get lost in translation when input is netplan (v2 yaml).
I'm attaching a recreate script, but basically the mtu setting gets lost
when writing ENI or sysconfig if the input is v2 yaml.
input of:
version: 2
vlans:
bond0.1000:
addresses: ["192.6.1.9/24"]
id: 1000
link: bond0
mtu: 1496
bond0.1001:
id: 1001
link: bond0
bonds:
bond0:
interfaces: ["enp0s0", "enp0s1"]
parameters: {}
mtu: 1496
Renders output files like etc/sysconfig/network-scripts/ifcfg-bond0:
# Created by cloud-init on instance boot automatically, do not edit.
#
BONDING_MASTER=yes
BONDING_SLAVE0=enp0s0
BONDING_SLAVE1=enp0s1
BOOTPROTO=none
DEVICE=bond0
NM_CONTROLLED=no
ONBOOT=yes
STARTMODE=auto
TYPE=Bond
USERCTL=no
Where the same config from v1 would have the 'MTU=1496'
ProblemType: Bug
DistroRelease: Ubuntu 19.10
Package: cloud-init 19.1-1-gbaa47854-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-54.58-generic 4.15.18
Uname: Linux 4.15.0-54-generic x86_64
ApportVersion: 2.20.11-0ubuntu5
Architecture: amd64
CloudName: LXD
Date: Wed Jul 17 18:37:04 2019
PackageArchitecture: all
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=C.UTF-8
SourcePackage: cloud-init
UpgradeStatus: No upgrade log present (probably fresh install)
user_data.txt:
#cloud-config
{}
** Affects: cloud-init
Importance: Undecided
Status: Confirmed
** Affects: cloud-init (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug eoan uec-images
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https://bugs.launchpad.net/bugs/1836949
Title:
mtu gets lost in translation from netplan (v2) yaml
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