** Description changed: [Impact] According to netplan doc https://netplan.readthedocs.io/en/latest/netplan-yaml gateway4/gateway6 are deprecated and the first version deprecates these fields is 0.103, it should use "routes:" instead. In scripts/functions:_render_netplan, it still generates the deprecated fields in /run/netplan/xxx.yaml: - if [ -n "$gateway4" ]; then - echo " gateway4: \"$gateway4\"" - fi - if [ -n "$gateway6" ]; then - echo " gateway6: \"$gateway6\"" - fi + if [ -n "$gateway4" ]; then + echo " gateway4: \"$gateway4\"" + fi + if [ -n "$gateway6" ]; then + echo " gateway6: \"$gateway6\"" + fi Then casper copies this config to root filesystem and later on used by cloud-init: https://git.launchpad.net/ubuntu/+source/casper/tree/scripts/casper-bottom/58server_network?h=applied/ubuntu/noble-updates#n47 In this case, cloud-init returns 2 (success with recoverable errors) rather than '0' (success) We should modify these fields to use "routes:" based on netplan doc: https://netplan.readthedocs.io/en/latest/netplan-yaml/#default-routes - [Test Case] To verify if it generates the correct netplan config, we can specify ip related config in kernel cmdline in grub menu and check the yaml file in /run/netplan/ Steps to reproduce the netplan config: 1. launch a test VM in lxd 2. go into grub menu 3. pass ip related info to kernel cmdline, e.g. ip=10.194.146.91::10.194.146.1:255.255.255.0::::10.194.146.1 4. boot into system and check /run/netplan/xxx.yaml Originally, it generates something like: - cat /run/netplan/enp5s0.yaml + cat /run/netplan/enp5s0.yaml network: - version: 2 - ethernets: - enp5s0: - addresses: - - "10.194.146.91/24" - gateway4: "10.194.146.1" - nameservers: - addresses: ["10.194.146.1"] + version: 2 + ethernets: + enp5s0: + addresses: + - "10.194.146.91/24" + gateway4: "10.194.146.1" + nameservers: + addresses: ["10.194.146.1"] After the patch, it generates something like: - cat /run/netplan/enp5s0.yaml + cat /run/netplan/enp5s0.yaml network: - version: 2 - ethernets: - enp5s0: - addresses: - - "10.194.146.91/24" - routes: - - to: default - via: "10.194.146.1" - nameservers: - addresses: ["10.194.146.1"] - + version: 2 + ethernets: + enp5s0: + addresses: + - "10.194.146.91/24" + routes: + - to: default + via: "10.194.146.1" + nameservers: + addresses: ["10.194.146.1"] [Where problems could occur] This patch follows the netplan doc to use "routes:" for default gateway, - if the format is correct, it shouldn't cause any issue. + so network connectivity will be impacted on regressions. We should ensure that networking and routing works correctly, e.g. with a basic networking smoke test. [Other Info] https://bugs.launchpad.net/cloud-init/+bug/1992512
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2093164 Title: initramfs-tools generates deprecated netplan config gateway4 and gateway6 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/2093164/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
