: Hey Rahul, I got the PL2303 based usb->serial adapters but unfortunately
: they appear to work perfectly. I connected up a modem via /dev/ucom0
: and dialed an ISP using ppp and it works.
I take it back!
It turns out that 'ppp' works fine, but 'pppd' cannot seem to read any
data back from the modem. When I used pppd to talk to the modem via
ucom0 it failed to read() data from the modem even though the modem was
definitely sending data to the computer. When I used pppd to talk to
the modem via cuaa0 it read() the data fine (and also hit the continuous
loop problem).
So I am able to reproduce *BOTH* issues.
-Matt