|VIO(4)||Device Drivers Manual||VIO(4)|
vio — VirtIO
vio* at virtio? flags 0x00
vio driver provides support for the
virtio(4) network interface provided by
bhyve, KVM, QEMU, and VirtualBox.
Setting the bit 0x2 in the flags disables the RingEventIndex
feature. This can be tried as a workaround for possible bugs in host
vio at the cost of slightly
Setting the bit 0x100 in the flags forces the interface to be always in promiscuous mode. This can be used as a workaround for a bug in QEMU before version 1.7.2 that prevents packets with a VLAN tag from being sent to the guest.
vio driver first appeared in
vio driver was ported to
OpenBSD and improved by Stefan
It is based on the NetBSD
vioif driver by Minoura
|September 24, 2015||OpenBSD-current|