Comment 0 for bug 1668693

1. root@z1:/etc/netplan# lsb_release -rd
Description: Ubuntu Zesty Zapus (development branch)
Release: 17.04

2. root@z1:/etc/netplan# apt-cache policy nplan
nplan:
  Installed: 0.18
  Candidate: 0.18
  Version table:
 *** 0.18 500
        500 http://archive.ubuntu.com/ubuntu zesty/main amd64 Packages
        100 /var/lib/dpkg/status

3. netplan generate renders a config with MTU setting

4. root@z1:/etc/netplan# netplan generate
Error in network definition //etc/netplan/simple.yaml line 4 column 6: unknown key mtu

root@z1:/etc/netplan# cat simple.yaml
network:
  version: 2
  ethernets:
    eno1:
      dhcp4: true
      mtu: 1280

ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: nplan 0.18
ProcVersionSignature: Ubuntu 4.4.0-62.83-generic 4.4.40
Uname: Linux 4.4.0-62-generic x86_64
ApportVersion: 2.20.4-0ubuntu2
Architecture: amd64
Date: Tue Feb 28 16:47:13 2017
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
SourcePackage: nplan
UpgradeStatus: No upgrade log present (probably fresh install)