VM lost IPv4 address

Incus
1

I run a three node Incus Cluster on Ubuntu 24.04.3 servers, CEPH RBD for VMs/Containers/Images, and OVN for networking. The Incus version is 6.18. I noticed that one of my VMs somehow lost its IPv4:

agoldchleger@vbtsrv02:~$ sudo incus list

#Output edited for clarity

+--------+---------+----------------------+------------------+-----------------+
|  NAME  |  STATE  |         IPV4         |       IPV6       | TYPE | LOCATION |
+--------+---------+----------------------+------------------+-----------------+
| addc01 | RUNNING | 10.95.110.5 (enp5s0) | fd42:... (enp5s0)| VM   | vbtsrv02 |
+--------+---------+----------------------+------------------+-----------------+
| addc02 | RUNNING |                      | fd42:... (enp5s0)| VM   | vbtsrv04 |
+--------+---------+----------------------+------------------+-----------------+

I checked the logs and could not see anything obviously wrong. After restarting the VM, I noticed that the interface name switched from enp5s0 to eth0:

agoldchleger@vbtsrv02:~$ sudo incus restart addc02

agoldchleger@vbtsrv02:~$ sudo incus list

#Output edited for clarity

+--------+---------+---------------------+-------------------+------+----------+
|  NAME  |  STATE  |         IPV4        |       IPV6        | TYPE | LOCATION |
+--------+---------+---------------------+-------------------+------+----------+
| addc01 | RUNNING | 10.95.110.5 (enp5s0)| fd42:... (enp5s0) | VM   | vbtsrv02 |
+--------+---------+---------------------+-------------------+-----------------+
| addc02 | RUNNING | 10.95.110.6 (eth0)  | fd42:... (eth0)   | VM   | vbtsrv04 |
+--------+---------+---------------------+-------------------+-----------------+

In my environment, containers’ interfaces normally show as eth0, and VM interfaces as enp5s0.

After restarting, I can ping between VMs with no issues, but I wonder if there is still something wrong I must fix.

Thanks,

Andrei

2

UPDATE:I had to reboot the addc02 VM because of an unrelated issue, and now its interfaces show as enp5s0.