[SOLVED] How to remove/undo PCIe (NIC) passthrough?

[avdol]

Hi,

I have a nic passthrough to pfsense which i want to convert to linux bridge. How do i undo a pcie passthrough so that the host can regain control?

 

[Dunuin]

You remove the "PCI device" from the VMs hardware tab and restart the VM.

 

[avdol]

You remove the "PCI device" from the VMs hardware tab and restart the VM.

I did that but i got this error whilst trying to create a bridge



Furthermore, under network for the node, each port of the NIC is not active

 

[leesteken]

I have a nic passthrough to pfsense which i want to convert to linux bridge. How do i undo a pcie passthrough so that the host can regain control?

Did you make changes to the kernel parameters and/or files in /etc/modprobe.d/? You probably need to undo them.

 

[avdol]

Did you make changes to the kernel parameters and/or files in /etc/modprobe.d/? You probably need to undo them.

Indeed i did. I performed the following to undo the block.

nano /etc/modprobe.d/nicpcie.block.conf

update the file to undo the block by commenting the line i added.

nano /etc/modprobe.d/nicblacklist.conf


update-initramfs -u -k all

Performed a reboot and now the nic port is active.



I've just elaborated for other that may come across the issue. Post will be marked as solved

 

[kevindd992002]

So if it's inactive in the host, does that mean it is blocked already? Proxmox tries to automatically block the nic in the host when passing through, right?