On 01/22/13 21:23, Nguyễn Hồng Quân wrote: > Here is my log: > http://paste.ubuntu.com/1561429/ The logs show what appears to be a low-level communications problem. We're receiving fine, but the peer cannot receive the messages we're sending. If you're able to get diagnostic information out of the peer, you may be able to find out what is going wrong, but I think it's more likely that a problem like this will require a dedicated external Ethernet analyzer to figure out whether or not your system is sending correctly-formed messages. -- James Carlson 42.703N 71.076W <carlsonj@xxxxxxxxxxxxxxx> -- 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