First, you can try this
Please note the syntax that worked for the user
qvm-pci attach sys-net dom0:02_00.0 --persistent -o permissive=true
For example, this one worked for me:
qvm-pci attach --persistent sys-net dom0:00_1d.0 -o no-strict-reset=true
Next, and probably not the last, what worked for some of my cards was to start them as systemd services.
Just create /etc/systemd/system/04-ethernet-permissive.service file and enable service, reboot and check
[Unit]
Description=Set permissive mode to ethernet card and enable with `sudo systemctl enable 04-ethernet-permissive.service`
[Service]
ExecStart=/bin/sh -c 'echo 0000:04:00.0 > /sys/bus/pci/drivers/pciback/permissive'
Type=oneshot
RemainAfterExit=yes
[Install]
WantedBy=multi-user.target
Try it in PV mode as well as in fedora-36.