Hi,all! I got some kill PID issue. I think the data struct "ClientSessionStruct" connecting pppoe-server process and pppd process. So , when the server get a PADT, it can kill the child pppd process by according to the ClientSessionStruct's member pid. my problem: I modified the pppoe-server code ,and let pppoe-server spawn a pppd. then let the server send SIGTEM to pppd(using kill(pppd 2's pid , SIGTEM)) not using the normal way(such as stopsession as the code written). the pppoe-server and pppd die both, why? 2008-05-21 -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html