Thanks, Michael!

So I believe we can proceed with the SRU.

I did another batch of tests today. The results are described below:


The steps below were used to validate the fix on Jammy and Kinetic:

1) Launch a LXD Jammy instance and access it

lxc launch ubuntu:22.04 jammy-netplan
lxc shell jammy-netplan

2) Create the base config

cat <<EOF > /etc/netplan/0-snapd-defaults.yaml
network:
  version: 2
  ethernets:
    ens3:
      addresses:
      - "10.0.2.15/24"
      dhcp4: false
      routes:
      - to: "default"
        via: "10.0.2.2"
  bridges:
    br54:
      dhcp4: true
EOF

3) Try to change it with netplan set

netplan set --origin-hint 90-snapd-config network.bridges.br54.dhcp4=false

4) Check the the new file WASN'T created

cat /etc/netplan/90-snapd-config.yaml

output: cat: /etc/netplan/90-snapd-config.yaml: No such file or directory

5) Check that the DBus interface IS working properly:

busctl call io.netplan.Netplan /io/netplan/Netplan io.netplan.Netplan Config

output: o "/io/netplan/Netplan/config/88ZI11"  <<---- USE THIS PATH IN THE COMMANDS BELOW

busctl call io.netplan.Netplan /io/netplan/Netplan/config/88ZI11 io.netplan.Netplan.Config Set ss "network.bridges.br54.dhcp4=false" "90-snapd-config"

output: b true

busctl call io.netplan.Netplan /io/netplan/Netplan/config/88ZI11 io.netplan.Netplan.Config Get

output: s "network:\n  version: 2\n  ethernets:\n    ens3:\n      addresses:\n      - \"10.0.2.15/24\"\n      dhcp4: false\n      routes:\n      - to: \"default\"\n        via: \"10.0.2.2\"\n    eth0:\n      dhcp4: true\n  bridges:\n    br54:\n      dhcp4: true\n"


6) Enable -proposed and update your netplan.io packages

echo "deb http://archive.ubuntu.com/ubuntu jammy-proposed main" >> /etc/apt/sources.list.d/proposed.list
apt update && apt -y upgrade

# kill netplan-dbus to make sure the new one will run when you try busctl again

killall netplan-dbus

7) Use netplan set again to change the configuration created in the second step

netplan set --origin-hint 90-snapd-config network.bridges.br54.dhcp4=false

8) Check the the new file WAS created this time

cat /etc/netplan/90-snapd-config.yaml

network:
  version: 2
  bridges:
    br54:
      dhcp4: false
      
9) Check that the DBus interface IS still working properly:

busctl call io.netplan.Netplan /io/netplan/Netplan io.netplan.Netplan Config

output: o "/io/netplan/Netplan/config/PMTC11"  <<---- USE THIS PATH IN THE COMMANDS BELOW

busctl call io.netplan.Netplan /io/netplan/Netplan/config/PMTC11 io.netplan.Netplan.Config Set ss "network.bridges.br54.dhcp4=false" "90-snapd-config"

output: b true

busctl call io.netplan.Netplan /io/netplan/Netplan/config/PMTC11 io.netplan.Netplan.Config Get

output: s "network:\n  version: 2\n  ethernets:\n    ens3:\n      addresses:\n      - \"10.0.2.15/24\"\n      dhcp4: false\n      routes:\n      - to: \"default\"\n        via: \"10.0.2.2\"\n    eth0:\n      dhcp4: true\n  bridges:\n    br54:\n      dhcp4: false\n"



---------




Validation on Kinetic

The same steps can be performed to valid netplan.io on kinetic


1) Launch a LXD Kinetic instance and access it

lxc launch ubuntu:22.10 kinetic-netplan
lxc shell kinetic-netplan

2) Create the base config

cat <<EOF > /etc/netplan/0-snapd-defaults.yaml
network:
  version: 2
  ethernets:
    ens3:
      addresses:
      - "10.0.2.15/24"
      dhcp4: false
      routes:
      - to: "default"
        via: "10.0.2.2"
  bridges:
    br54:
      dhcp4: true
EOF

3) Try to change it with netplan set

netplan set --origin-hint 90-snapd-config network.bridges.br54.dhcp4=false

4) Check the the new file WASN'T created

cat /etc/netplan/90-snapd-config.yaml

output: cat: /etc/netplan/90-snapd-config.yaml: No such file or directory

5) Check that the DBus interface IS working properly:

busctl call io.netplan.Netplan /io/netplan/Netplan io.netplan.Netplan Config

output: o "/io/netplan/Netplan/config/W4MK11"  <<---- USE THIS PATH IN THE COMMANDS BELOW

busctl call io.netplan.Netplan /io/netplan/Netplan/config/W4MK11 io.netplan.Netplan.Config Set ss "network.bridges.br54.dhcp4=false" "90-snapd-config"

output: b true

busctl call io.netplan.Netplan /io/netplan/Netplan/config/W4MK11 io.netplan.Netplan.Config Get

output: s "network:\n  version: 2\n  ethernets:\n    ens3:\n      addresses:\n      - \"10.0.2.15/24\"\n      dhcp4: false\n      routes:\n      - to: \"default\"\n        via: \"10.0.2.2\"\n    eth0:\n      dhcp4: true\n  bridges:\n    br54:\n      dhcp4: true\n"


6) Enable -proposed and update your netplan.io packages

echo "deb http://archive.ubuntu.com/ubuntu kinetic-proposed main" >> /etc/apt/sources.list.d/proposed.list
apt update && apt -y upgrade

# kill netplan-dbus to make sure the new one will run when you try busctl again

killall netplan-dbus

7) Use netplan set again to change the configuration created in the second step

netplan set --origin-hint 90-snapd-config network.bridges.br54.dhcp4=false

8) Check the the new file WAS created this time

cat /etc/netplan/90-snapd-config.yaml

network:
  version: 2
  bridges:
    br54:
      dhcp4: false
      
9) Check that the DBus interface IS still working properly:

busctl call io.netplan.Netplan /io/netplan/Netplan io.netplan.Netplan Config

output: o "/io/netplan/Netplan/config/CO0701"  <<---- USE THIS PATH IN THE COMMANDS BELOW

busctl call io.netplan.Netplan /io/netplan/Netplan/config/CO0701 io.netplan.Netplan.Config Set ss "network.bridges.br54.dhcp4=false" "90-snapd-config"

output: b true

busctl call io.netplan.Netplan /io/netplan/Netplan/config/CO0701 io.netplan.Netplan.Config Get

output: s "network:\n  version: 2\n  ethernets:\n    ens3:\n      addresses:\n      - \"10.0.2.15/24\"\n      dhcp4: false\n      routes:\n      - to: \"default\"\n        via: \"10.0.2.2\"\n    eth0:\n      dhcp4: true\n  bridges:\n    br54:\n      dhcp4: false\n"