et —
Agere/LSI ET1310/ET1301 10/100/Gigabit Ethernet device
et* at pci? dev ? function ?
etphy* at mii? phy ?
The et driver supports PCI Express Ethernet adapters
  based on the Agere/LSI ET1310/ET1301 integrated MAC/PHY.
The following media types are supported:
  - autoselect
- Enable autoselection of the media type and options.
- 10baseT
- Set 10Mbps operation.
- 100baseTX
- Set 100Mbps (Fast Ethernet) operation.
- 1000baseT
- Set 1000Mbps (Gigabit Ethernet) operation (ET1310 only).
Theet device driver first appeared in
  OpenBSD 4.3. It was added to NetBSD
  6.0.
The et driver was written by Sepherosa
  Ziehau for DragonFlyBSD, ported to OpenBSD by
  Jonathan Gray ⟨jsg@openbsd.org⟩, and
  subsequently ported to NetBSD by
  Kaspar Brand.