cannot passthrough WiFi card

[abayoumy]

Hi
I have NIC built in on board and ProxMox bridge use it
i try to passthrough external wifi card but once VM is runing, all network disconected !

i found that WIFI & Ethernet on same IOMMU Group 10


│ 0x020000 │ 0x8168 │ 0000:05:00.0 │ 10 │ 0x10ec │ RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller │ │ 0xe000 │ Onboard Ethernet │ 0x1458 │ Gigabyte Technology Co., Ltd │ Realtek Semiconductor Co., Ltd. │
├──────────┼────────┼──────────────┼────────────┼────────┼───────────────────────────────────────────────────────────┼──────┼──────────────────┼───────────────────────────────┼──────────────────┼────────────────────────────────────────┼────────────────────────────────────────┤
│ 0x028000 │ 0x818b │ 0000:04:00.0 │ 10 │ 0x10ec │ RTL8192EE PCIe Wireless Network Adapter │ │ 0x8196 │ │ 0x10ec │ Realtek Semiconductor Co., Ltd. │ Realtek Semiconductor Co., Ltd. │

recommended soulation for that ?

 

[leesteken]

recommended soulation for that ?

Not a recommended one, as IOMMU group are supposed to keep devices that can communicate secretly together. Any work-around allows the VM to read all of the memory and passwords from the Proxmox host (and therefore also all other VMs).

EDIT1: The IOMMU groups are determined by the motherboard PCIe layout/chips and the BIOS. If it is a mistake, then maybe a BIOS update can change the groups?
EDIT2: I assumed you already tried moving the devices to other PCIe slots, which is a recommended way to fix this.

 

[abayoumy]

Not a recommended one, as IOMMU group are supposed to keep devices that can communicate secretly together. Any work-around allows the VM to read all of the memory and passwords from the Proxmox host (and therefore also all other VMs).

EDIT: The IOMMU groups are determined by the motherboard PCIe layout/chips and the BIOS. If it is a mistake, then maybe a BIOS update can change the groups?

Thank you , i will try bios upgrade.

 

[leesteken]

Thank you , i will try bios upgrade.

I assumed you already tried moving the devices to other PCIe slots, which is a recommended way to fix this. Try a slot that is connected directly to the CPU instead of the motherboard chipset.