and in /var/log/messages
Jun 20 10:26:33 main pppd[19445]: Protocol-Reject for unsupported protocol
0xbe6b
Jun 20 10:26:42 main last message repeated 2 times
Jun 20 11:01:33 main pppd[19445]: Protocol-Reject for unsupported protocol
0xd0d2
Jun 20 11:27:51 main pppd[19445]: Protocol-Reject for unsupported protocol
0xba44
Jun 20 13:29:10 main pppd[19445]: Protocol-Reject for unsupported protocol
0xb694
Jun 20 13:29:16 main pppd[19445]: Protocol-Reject for unsupported protocol
0xb694
Jun 21 05:47:45 main pppd[19445]: Protocol-Reject for unsupported protocol
0x9e07