Looks like the culprit is very likely d85b758f72b0 "virtio_net: fix support for small rings". After that patch, my NFS server VM stops responding to packets after a few minutes of testing. Before that patch, my server keeps working. --b. _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization