Выложил лог модема что это значит?) Jan 1 00:00:07 (none) syslog.emerg BCM96345 started: BusyBox v1.00 (2011.07.04-08:43+0000) 98
Jan 1 00:00:07 (none) user.err kernel: [truncated] m. 61
Jan 1 00:00:36 (none) daemon.crit syslog: PPP server detected. 70
Jan 1 00:00:36 (none) daemon.err syslog: Unexpected packet: Ether addr: 00:90:1a:a4:45:43 (PPPOE Discovery) PPPoE hdr: ver=0x1 type=0x1 code=0x07 sid=0x0000 length=0x002e (PADO) PPPoE tag: type=0102 length=000a (AC Name) data (UTF-8): KRD-E320-1 PPPoE tag: type=0103 length=0004 (Host Uniq) da 303
Jan 1 00:00:36 (none) daemon.err syslog: Unexpected packet: Ether addr: 00:90:1a:a3:42:9f (PPPOE Discovery) PPPoE hdr: ver=0x1 type=0x1 code=0x07 sid=0x0000 length=0x002e (PADO) PPPoE tag: type=0102 length=000a (AC Name) data (UTF-8): KRD-E320-3 PPPoE tag: type=0103 length=0004 (Host Uniq) da 303
Jan 1 00:00:36 (none) daemon.crit syslog: PPP session established. 74
Jan 1 00:00:36 (none) daemon.crit syslog: PPP LCP UP. 61
Jan 1 00:00:37 (none) daemon.crit syslog: Received valid IP address from server. Connection UP. 104
Jan 1 00:18:38 (none) daemon.crit syslog: Clear IP addresses. Connection DOWN. 87
Jan 1 00:18:38 (none) daemon.crit syslog: Clear IP addresses. PPP connection DOWN. 91
Jan 1 00:18:52 (none) daemon.crit syslog: PPP server detected. 70
Jan 1 00:18:52 (none) daemon.err syslog: Unexpected packet: Ether addr: 00:90:1a:a4:45:43 (PPPOE Discovery) PPPoE hdr: ver=0x1 type=0x1 code=0x07 sid=0x0000 length=0x002e (PADO) PPPoE tag: type=0102 length=000a (AC Name) data (UTF-8): KRD-E320-1 PPPoE tag: type=0103 length=0004 (Host Uniq) da 303
Jan 1 00:18:52 (none) daemon.err syslog: Unexpected packet: Ether addr: 00:90:1a:a3:1b:88 (PPPOE Discovery) PPPoE hdr: ver=0x1 type=0x1 code=0x07 sid=0x0000 length=0x002e (PADO) PPPoE tag: type=0102 length=000a (AC Name) data (UTF-8): KRD-E320-2 PPPoE tag: type=0103 length=0004 (Host Uniq) da 303

Установите в настройках РРРоЕ опцию "Отладка РРР" и представьте логи ещё раз.