I tested network-manager 1.36.6-0ubuntu2.1 from jammy-proposed and can
confirm things are working as expected.
root@j:~# apt -t jammy-proposed install network-manager
root@j:~# netplan set --origin-hint=50-cloud-init
network.renderer=NetworkManager
root@j:~# netplan apply
WARNING:root:Cannot call Open vSwitch: ovsdb-server.service is not running.
root@j:~# nmcli con add type veth ifname veth0 peer veth1 ipv4.method disabled
ipv6.method disabled
Connection 'veth-veth0' (e1c66088-b66b-405c-8c1f-10133aa06c16) successfully
added.
root@j:~# nmcli con add type veth ifname veth1 peer veth0 ipv4.method disabled
ipv6.method disabled
Connection 'veth-veth1' (aa65dd6b-d0aa-4091-a102-f641f510ea4f) successfully
added.
root@j:~# netplan get
network:
version: 2
renderer: NetworkManager
ethernets:
enp5s0:
dhcp4: true
root@j:~# nmcli c
NAME UUID TYPE DEVICE
netplan-enp5s0 e1419a5e-5e1d-3fff-a17c-b2fc6d2cef99 ethernet enp5s0
veth-veth0 e1c66088-b66b-405c-8c1f-10133aa06c16 veth --
veth-veth1 aa65dd6b-d0aa-4091-a102-f641f510ea4f veth --
root@j:~# nmcli c
NAME UUID TYPE DEVICE
netplan-enp5s0 e1419a5e-5e1d-3fff-a17c-b2fc6d2cef99 ethernet enp5s0
veth-veth0 e1c66088-b66b-405c-8c1f-10133aa06c16 veth --
veth-veth1 aa65dd6b-d0aa-4091-a102-f641f510ea4f veth --
root@j:~# reboot
$ lxc shell j
root@j:~# nmcli c
NAME UUID TYPE DEVICE
netplan-enp5s0 e1419a5e-5e1d-3fff-a17c-b2fc6d2cef99 ethernet enp5s0
veth-veth0 e1c66088-b66b-405c-8c1f-10133aa06c16 veth veth0
veth-veth1 aa65dd6b-d0aa-4091-a102-f641f510ea4f veth veth1
root@j:~# journalctl | grep veth | grep manager
Dec 17 16:51:46 j NetworkManager[2380]: <info> [1734454306.5631] manager:
(veth0): new Veth device (/org/freedesktop/NetworkManager/Devices/3)
Dec 17 16:51:46 j NetworkManager[2380]: <info> [1734454306.5900] manager:
(veth1): new Veth device (/org/freedesktop/NetworkManager/Devices/4)
Dec 17 16:54:31 j NetworkManager[432]: <info> [1734454471.2093] manager:
(veth1): new Veth device (/org/freedesktop/NetworkManager/Devices/3)
Dec 17 16:54:31 j NetworkManager[432]: <info> [1734454471.2303] manager:
(veth0): new Veth device (/org/freedesktop/NetworkManager/Devices/4)
=> veth0 and veth1 are activated and no error message in journal!
** Tags removed: foundations-todo verification-needed-jammy
** Tags added: verification-done-jammy
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https://bugs.launchpad.net/bugs/2032824
Title:
Veth pairs fail activation on Jammy
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