| UPL(4) | Device Drivers Manual | UPL(4) | 
upl —
upl* at uhub?
upl driver provides support for Prolific
  PL2301/PL2302 based host-to-host USB connectors.
The upl driver appears as a point-to-point
    network interface and should be configured with
    ifconfig(8) in the same way
    as other point-to-point interfaces. The upl device
    supports IPv4 only.
upl driver supports the following adapters from the
  following vendors:
Belkin, Entrega, and Xircom do NOT use this chip and are not supported by this driver.
upl driver appeared in NetBSD
  1.5.
| April 10, 2000 | NetBSD 9.4 |