Public bug reported:
Configuring "/etc/netplan/01-netcfg.yaml" with an anonymous bridge seems
to require running "ip link set dev br0 up" to bring the bridge up after
boot. A bridge configured with an IP address is automatically up after
boot.
This is only a problem if you want an anonymous bridge which comes up
automatically after boot. For example, if you preferred to isolate host
traffic from your autostarting virtual machine traffic.
Configuration that results in the bridge being down after boot:
network:
version: 2
renderer: networkd
ethernets:
enp22s2:
dhcp4: yes
enp22s3:
dhcp4: no
bridges:
br0:
interfaces: [enp22s3]
dhcp4: false
parameters:
stp: false
forward-delay: 0
Enabling DHCP results in a bridge that is automatically up after boot:
network:
version: 2
renderer: networkd
ethernets:
enp22s2:
dhcp4: yes
enp22s3:
dhcp4: no
bridges:
br0:
interfaces: [enp22s3]
dhcp4: true
parameters:
stp: false
forward-delay: 0
Setting a static IP address results in a bridge that is automatically up after
boot:
network:
version: 2
renderer: networkd
ethernets:
enp22s2:
dhcp4: yes
enp22s3:
dhcp4: no
bridges:
br0:
interfaces: [enp22s3]
dhcp4: false
addresses: [192.168.1.100/24]
parameters:
stp: false
forward-delay: 0
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: nplan 0.30
ProcVersionSignature: Ubuntu 4.13.0-17.20-generic 4.13.8
Uname: Linux 4.13.0-17-generic x86_64
ApportVersion: 2.20.7-0ubuntu3.5
Architecture: amd64
Date: Thu Dec 7 11:06:25 2017
ProcEnviron:
LANGUAGE=en_CA:en
TERM=screen
PATH=(custom, no user)
LANG=en_CA.UTF-8
SHELL=/bin/bash
SourcePackage: nplan
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: nplan (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug artful
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https://bugs.launchpad.net/bugs/1736975
Title:
netplan does not bring up anonymous bridge on boot
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