Hello I have two Debian. One is Slink second is Potato. Between them is leased cuper line and two modems set-up for leased line. Wehen I start pppd (noauth persist) ppp0 starts. I have ip number, connection seems to be ok but it does not ping. On that Slink I have oter connection set-up the same way and they works. It is not problem with serial (I have multiport Cyclades). This potato connect with standard phone number to any RAS.
TIA Marcin Jakubowski