I am trying to use “irport” as the IRDA driver. Irdadump does work. However, I can not setup ppp connection with either irnet or ircomm. I am using RedHat 9.0 on Dell Inspiron 500 and RedHat 8.2 on IBM T23. The fact is the sender sends the messages, the receiver receives message. However, the original sender never receives the response from the receiver. (I got this information by running pppd with debug on). Can anyone help on it?