@DustinB Here is the backup job configuration: [image: 1743536286372-0459c49d-0b84-4585-9bb8-e3c79bac771b-image.png] [image: 1743536250474-6c3f31b2-aeb7-4d96-b441-3248af6f27a2-image.png]

I quickly discussed with Xen developers and they are curious about your issue. Can you do a lspci -vvvv in your Dom0, first while you have still the option pci=realloc, and once without it, and see if we can spot any difference regarding your NIC. This might be helpful (you can provide both outputs at https://paste.vates.tech)