Same issue for me.
I can boot on 1.03 but no ping and cpu is 100% on one core.
Here my config:
args: -device 'piix3-usb-uhci,addr=0x18' -drive 'id=synoboot,file=/var/lib/vz/images/100/synoboot.img,if=none,format=raw' -device 'usb-storage,id=synoboot,drive=synoboot'
bios: ovmf
boot: 4
cores: 4
efidisk0: local-lvm:vm-100-disk-2,size=128K
hostpci0: 00:17.0,pcie=1,rombar=off
ide0: local-lvm:vm-100-disk-3,size=32G
machine: q35
memory: 5000
name: test
net0: e1000=8A:1A:5A:9D:44:AA,bridge=vmbr0
net1: e1000=7E:84:C8:B6:04:B4,bridge=vmbr1
numa: 0
onboot: 1
ostype: l26
parent: before_upgrade
scsihw: virtio-scsi-pci
smbios1: uuid=9a115c50-2291-4197-8845-eed8a3b86364
sockets: 1
@sashxp do you see anything in common with my config ?
Are you using pci passthrough ?
