> 	I set up a serial line between 2 of my macs and used a terminal
> emulator to let it access a shell with getty and it worked just fine. Even
> with the machine using tty00 for a ppp connection, it worked alright using
> the printer port for the serial connection to my other mac's modem port.
> But, after I fired up ppp I started getting a couple of messages from
> zstty0....:

When you fired ppp up on the printer port (tty01) you started having errors
on the modem (tty00)?

> Dec  8 02:31:45 /netbsd: zstty0: 1 silo overflow, 0 ibuf floods
> <snip>
> Dec  8 03:19:33 /netbsd: zstty0: 1 silo overflow, 0 ibuf floods
> <snip>
> Dec  8 03:21:05 /netbsd: zstty0: 3 silo overflows, 0 ibuf floods
> 
> 	I didn't notice any problems... and actually at the time I wasn't
> using the terminal for anything. It was just sitting there with a login
> prompt. I had been using it before I fired up pppd and it worked just
> fine. Is it just overtaxing my serial ports or is it something else?

What baud rate were you using on the modem? There's a little overhead in
the ppp system itself, and it could be holding off interrupts just long
enough to get silo overflows. :-(

Take care,

Bill