[SOLVED] Problems with Ethernet / Network

[Kalone]

Hello,

when an win10 VM guest is started, the intel x540 T2 no longer exist on the host. First of all a vmbr0 is configurated on a bridge-port with en2s0f1, everthing is working fine and Linux quest have a connection on vmbr1, once a win10 VM is started the NIC is not longer approachable.

auto lo
iface lo inet loopback

auto enp5s0
iface enp5s0 inet static
        address 192.168.1.2/24
#Fallback 1 Gbit

auto enp2s0f0
iface enp2s0f0 inet static
        address 192.168.0.2/24

auto enp2s0f1
iface enp2s0f1 inet manual

auto vmbr0
iface vmbr0 inet static
        address 192.168.0.8/24
        gateway 192.168.0.12
        bridge-ports enp2s0f1
        bridge-stp off
        bridge-fd 0

With ifreload comes this message:

root@pve:~# ifreload -a
error: vmbr0: bridge port enp2s0f1 does not exist

I think the drivers are loaded correctly?

root@pve:~# dmesg | grep eth
[    1.114225] tg3 0000:05:00.0 eth0: Tigon3 [partno(BCM57781) rev 57785100] (PCI Express) MAC address bc:5f:f4:8a:b7:dc
[    1.114228] tg3 0000:05:00.0 eth0: attached PHY is 57765 (10/100/1000Base-T Ethernet) (WireSpeed[1], EEE[1])
[    1.114230] tg3 0000:05:00.0 eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] TSOcap[1]
[    1.114231] tg3 0000:05:00.0 eth0: dma_rwctrl[00000001] dma_mask[64-bit]
[    1.116169] tg3 0000:05:00.0 enp5s0: renamed from eth0
[    2.319349] ixgbe 0000:02:00.1 enp2s0f1: renamed from eth1
[    2.337390] ixgbe 0000:02:00.0 enp2s0f0: renamed from eth0

After a reboot everthing is working fine, until the win10 guest is started again...

I am running out of ideas how i can handle this issue, hope there is some one can help me, thanks ahead

 

[Kalone]

It seems to be the GPU passtrough cause this issue, the GPU and the NIC are on the same IOMMU group, how can this be fixed?

 

[bobmc]

I think your only hope might be to move the NIC to a different IO slot on the mainboard if you have a spare x8 or x16 slot and hope that moves the NIC into a different IOMMU group

 

[Kalone]

Ok, i only have two 8x or 16x PCIe, so if this was the only way, it will be a hard decision between 10GB or GPU usage on the VM's....

There are affordable 10 GB Cards wich work with 1x PCIe?