Changing NIC PCI Bus address

[Vladislav Solovei]

Hello.

It is possible to change PCI bus address for NIC in Proxmox?
I mean, these values (on example): -device virtio-net-pci...,netdev=net0,bus=pci.0,addr=0x12

 

[dcsapak]

no but why do you want to change those?

 

[Vladislav Solovei]

no but why do you want to change those?

I am trying to migrate some Windows VM's to Proxmox.
The network interface had a different address (pci.0, addr=0x3).
MAC address and network device type left same.
After the migration, the address changed to pci.0, addr=0x12, and the previously configured network connection (manually configured) disappeared in Windows, instead of it a different connection appeared (Local area connection # 2) with default settings (dhcp)...

 

[Christian Steineder]

This is another use case for us:
We also need this feature for migrating an appliance where licenses are bound to the bus order.

 

[pieteras.meyer]

Im also looking for this solution,

tried below in vm config file, while trying to add a interface from DPDK bridge ( ovs or vpp) vhost-user interfaces

Like from below
https://access.redhat.com/documenta...ion_pci_devices_to_kvm_guest_virtual_machines

<address type='pci' domain='0x0000' bus='0x10' slot='0x00' function='0x0' multifunction='on'/>
<address type='pci' domain='0x0000' bus='0x10' slot='0x00' function='0x1'/>

Below is what I would add to vm.conf file but not sure how to add the slot and function to the config file

args: -chardev socket,id=char1,path=/var/run/vpp/vhost-200-e1,server=on -netdev type=vhost-user,id=net0,chardev=char1,vhostforce=on,queues=10 -device virtio-net-pci,bus=pci.0,addr=0x12,mac=52:54:00:21:42:D3,netdev=net0,mq=on,packed=on,vectors=22,mrg_rxbuf=on,rx_queue_size=1024,tx_queue_size=1024 -chardev socket,id=char2,path=/var/run/vpp/vhost-200-e2,server=on -netdev type=vhost-user,id=net1,chardev=char2,vhostforce=on,queues=10 -device virtio-net-pci,bus=pci.0,addr=0x12,mac=52:54:00:21:42:D4,netdev=net1,mq=on,packed=on,vectors=22,mrg_rxbuf=on,rx_queue_size=1024,tx_queue_size=1024