NUT-MONITOR not working any more after in place upgrade to PVE9

[aheinz]

Issue:

I previously used this howto and it was working just fine...

Now i get this in lxc syslog:
2025-10-05T16:43:07.635272+00:00 nutmonitor nut-monitor[1112]: UPS ups@192.168.10.251 is unavailable
2025-10-05T16:43:07.636376+00:00 nutmonitor nut-monitor[1191]: Network UPS Tools upsmon 2.8.1
2025-10-05T16:43:07.636792+00:00 nutmonitor nut-monitor[1191]: Warning: no shutdown command defined!
2025-10-05T16:45:01.006066+00:00 nutmonitor CRON[1197]: (root) CMD (command -v debian-sa1 > /dev/null && debian-sa1 1 1)
2025-10-05T16:45:26.896825+00:00 nutmonitor nut-monitor[1112]: UPS [ups@192.168.10.251]: connect failed: Connection failure: Connection timed out


Network UPS Tools runs direct on the PVE9 host and looks fine for me...

[nutdev1]
driver = "usbhid-ups"
port = "auto"
vendorid = "0463"
productid = "FFFF"
product = "Ellipse PRO"
serial = "G364P14018"
vendor = "EATON"
bus = "001"
device = "002"
busport = "006"
###NOTMATCHED-YET###bcdDevice = "0100"

root@proxmox:/etc/nut# systemctl status nut-server
● nut-server.service - Network UPS Tools - power devices information server
Loaded: loaded (/usr/lib/systemd/system/nut-server.service; enabled; preset: enabled)
Active: active (running) since Sun 2025-10-05 17:37:05 CEST; 1h 14min ago
Invocation: 93dafe367e2f422a9371cf0fbc367fdc
Process: 791362 ExecStartPre=/usr/bin/systemd-tmpfiles --create /usr/lib/tmpfiles.d/nut-common-tmpfiles.conf (code=exited, status=0/SUCCESS)
Main PID: 791363 (upsd)
Tasks: 1 (limit: 38164)
Memory: 544K (peak: 1.7M)
CPU: 630ms
CGroup: /system.slice/nut-server.service
└─791363 /lib/nut/upsd -F

Oct 05 17:37:50 proxmox upsd[791363]: Can't connect to UPS [heartbeat] (dummy-ups-heartbeat): No such file or directory
Oct 05 17:37:50 proxmox nut-server[791363]: Can't connect to UPS [heartbeat] (dummy-ups-heartbeat): No such file or directory
Oct 05 17:38:08 proxmox nut-server[791363]: Connected to UPS [heartbeat]: dummy-ups-heartbeat
Oct 05 17:38:08 proxmox upsd[791363]: Connected to UPS [heartbeat]: dummy-ups-heartbeat
Oct 05 17:38:15 proxmox nut-server[791363]: Connected to UPS [heartbeat]: dummy-ups-heartbeat
Oct 05 17:38:15 proxmox upsd[791363]: Connected to UPS [heartbeat]: dummy-ups-heartbeat
Oct 05 17:38:19 proxmox nut-server[791363]: Connected to UPS [ups]: usbhid-ups-ups
Oct 05 17:38:19 proxmox upsd[791363]: Connected to UPS [ups]: usbhid-ups-ups
Oct 05 17:38:30 proxmox nut-server[791363]: Connected to UPS [heartbeat]: dummy-ups-heartbeat
Oct 05 17:38:30 proxmox upsd[791363]: Connected to UPS [heartbeat]: dummy-ups-heartbeat

Does anyone had the same experiance or even already a solution?