| VMX(4) | Device Drivers Manual | VMX(4) | 
vmx —
vmx* at pci? dev ? function ?
vmx driver provides support for the VMXNET3 virtual
  NIC available in virtual machines by VMware. It appears as a simple Ethernet
  device but is actually a virtual network interface to the underlying host
  operating system.
This driver supports the VMXNET3 driver
    protocol, as an alternative to the emulated
    pcn(4),
    wm(4) interfaces also available
    in the VMware environment. The vmx driver is
    optimized for the virtual machine, it can provide advanced capabilities
    depending on the underlying host operating system and the physical network
    interface controller of the host. In comparison to the earlier VMXNET
    versions, VMXNET3 supports additional features like multiqueue support, IPv6
    checksum offloading, MSI/MSI-X support and hardware VLAN tagging in VMware's
    VLAN Guest Tagging (VGT) mode.
The vmx driver supports VMXNET3 VMware
    virtual NICs provided by the virtual machine hardware version 7 or newer, as
    provided by the following products:
The vmx driver supports the following
    media types:
For more information on configuring this device, see ifconfig(8).
vmx device:
ethernet0.virtualDev = "vmxnet3"
vmx device driver first appeared in
  OpenBSD 5.5 and was ported for NetBSD
  7.0.
vmx driver was originally written by
  Tsubai Masanari. NetBSD
  porting was done by Hikaru ABE
  <hikaru@NetBSD.org>.
| June 7, 2014 | NetBSD 9.4 |