From what I seem to remember from many moons ago when
I wrote the driver and tested it, there are some
problems.  If you send packets too quickly to the
device they seem to get overwritten or something.
If the device worked properly it would not allow writing
when it doesn't have space, so maybe it's broken.
Or maybe the driver is broken?  I don't think the upl
driver is used very much, so you might be on your own.

	-- Lennart


davef1624@aol.com wrote:
> Hi,
> 
> I'm using the upl driver to provide host-to-host communications
> using the USB (uhub) driver.    Connectivity is achieved by using the 
> Prolific PL2301/PL2302
> USB cable/bridges.
> 
> I'm sending UDP datagrams over USB without any link-level framing (e.g., 
> using PPP).
> Just the raw IP packets are sent over the USB link to the other host.
> In addition, the USB link is configured as 'SIMPLEX' and with an mtu 
> size of 1500.
> 
> I believe I may be experiencing reliability problems across this 
> host-to-host USB link.
> 
> Are there are reliability issues with this configuration?
> Should I instead be using PPP (UDP over PPP) to provide link-level control?
> Is there an issue with my mtu size?
> 
> Appreciate any help you can provide.
>