[Qemu-devel] kvm: virtio-net: saved image requires TUN_F_UFO support

[Stefan Priebe - Profihost AG]

Hello,

i've upgraded some servers from kernel 4.4 to 4.12 - both running Qemu
2.9.1.

If i migrate a VM from a host running kernel 4.4 to a host running 4.12
i get:

kvm: virtio-net: saved image requires TUN_F_UFO support
kvm: Failed to load virtio-net-device:tmp
kvm: Failed to load virtio-net:virtio
kvm: error while loading state for instance 0x0 of device
'0000:00:12.0/virtio-net'
kvm: load of migration failed: Invalid argument


while migrating from 4.12 to 4.4 works fine.

Can anybody help? Is this expected?

Greets,
Stefan