Public bug reported:
1) # lsb_release -rd
Description: Ubuntu 18.04.1 LTS
Release: 18.04
2) # apt-cache policy netplan.io
netplan.io:
Installed: 0.36.3
Candidate: 0.40.1~18.04.3
Version table:
0.40.1~18.04.3 500
500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
*** 0.36.3 100
100 /var/lib/dpkg/status
0.36.1 500
500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages
3) netplan generate creates configuration for a bridge with single
member and wifi accesspoint
4) netplan generate returns error, "Duplicate access point SSID"
# netplan --debug generate
DEBUG:command generate: running ['/lib/netplan/generate']
** (generate:5321): DEBUG: 20:44:08.972: Processing input file
//etc/netplan/50-cloud-init.yaml..
** (generate:5321): DEBUG: 20:44:08.972: starting new processing pass
** (generate:5321): DEBUG: 20:44:08.972: recording missing yaml_node_t enp5s0
** (generate:5321): DEBUG: 20:44:08.973: wlp6s0: adding wifi AP
'palisades-guest'
** (generate:5321): DEBUG: 20:44:08.973: starting new processing pass
** (generate:5321): DEBUG: 20:44:08.973: wlp6s0: adding wifi AP
'palisades-guest'
Error in network definition //etc/netplan/50-cloud-init.yaml line 18 column 16:
wlp6s0: Duplicate access point SSID 'palisades-guest'
% cat /etc/netplan/50-cloud-init.yaml
# This file is generated from information provided by
# the datasource. Changes to it will not persist across an instance.
# To disable cloud-init's network configuration capabilities, write a file
# /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg with the following:
# network: {config: disabled}
network:
bridges:
mybridge:
interfaces: [enp5s0]
dhcp4: true
ethernets:
enp5s0:
dhcp4: no
wifis:
wlp6s0:
dhcp4: true
optional: true
access-points:
"mywifi":
password: "mypass"
version: 2
Note, if I move the ethernet definition of enp5s0 before the bridge,
netplan can parse it.
This appears to be related to parse.c:add_missing_node() which tags it
is missing a definition and then reparses. This then attempts to parse
wifis a second time and runs into a condition check that's meant to
prevent duplicate SSIDs.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: netplan.io 0.36.3
ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
Uname: Linux 4.15.0-36-generic x86_64
NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair
ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
Date: Fri Dec 28 20:40:57 2018
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
LANG=en_US.UTF-8
SHELL=/bin/bash
SourcePackage: netplan.io
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: netplan.io (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug bionic uec-images
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https://bugs.launchpad.net/bugs/1809994
Title:
netplan reparses wifi when bridge member is listed before definition
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