In this mode, the PPP packets start with the protocol identifier and don't
have any explicit framing (which may be added by the lower level driver).
Make input/output statistics a little bit more correct by adding a hardware
driver adjustable framing length for each packet (instead of the constant
value "3" used before).
While there, bump authentication name length from 32 to 48 (I have a
connection where I need more than 32). XXX - this should not be artificialy
limited at all.
8f8dc65f89