Unknown L2TP/IPSEC error

jooseluisperez

Does anybody know what this error mean?

Sep 27 17:11:43 	charon 		08[ENC] <12> parsed INFORMATIONAL_V1 request 386127813 [ HASH N((28)) ]


Sep 27 17:11:43 	charon 		06[NET] <12> received packet: from XX.XXX.XXX.XX[34131] to XX.XXX.XXX.XX[500] (384 bytes)
Sep 27 17:11:43 	charon 		06[ENC] <12> parsed ID_PROT request 0 [ SA V V V V V V V ]
Sep 27 17:11:43 	charon 		06[IKE] <12> received MS NT5 ISAKMPOAKLEY vendor ID
Sep 27 17:11:43 	charon 		06[IKE] <12> received NAT-T (RFC 3947) vendor ID
Sep 27 17:11:43 	charon 		06[IKE] <12> received draft-ietf-ipsec-nat-t-ike-02\n vendor ID
Sep 27 17:11:43 	charon 		06[IKE] <12> received FRAGMENTATION vendor ID
Sep 27 17:11:43 	charon 		06[ENC] <12> received unknown vendor ID: OMMITED DATA
Sep 27 17:11:43 	charon 		06[ENC] <12> received unknown vendor ID: OMMITED DATA
Sep 27 17:11:43 	charon 		06[ENC] <12> received unknown vendor ID: OMMITED DATA
Sep 27 17:11:43 	charon 		06[IKE] <12> XX.XXX.XXX.XX is initiating a Main Mode IKE_SA
Sep 27 17:11:43 	charon 		06[ENC] <12> generating ID_PROT response 0 [ SA V V V V ]
Sep 27 17:11:43 	charon 		06[NET] <12> sending packet: from XX.XXX.XXX.XX[500] to XX.XXX.XXX.XX[34131] (156 bytes)
Sep 27 17:11:43 	charon 		08[NET] <12> received packet: from XX.XXX.XXX.XX[34131] to XX.XXX.XXX.XX[500] (388 bytes)
Sep 27 17:11:43 	charon 		08[ENC] <12> parsed ID_PROT request 0 [ KE No NAT-D NAT-D ]
Sep 27 17:11:43 	charon 		08[IKE] <12> remote host is behind NAT
Sep 27 17:11:43 	charon 		08[IKE] <12> sending cert request for "OMMITED DATA"
Sep 27 17:11:43 	charon 		08[ENC] <12> generating ID_PROT response 0 [ KE No CERTREQ NAT-D NAT-D ]
Sep 27 17:11:43 	charon 		08[NET] <12> sending packet: from XX.XXX.XXX.XX[500] to XX.XXX.XXX.XX[34131] (519 bytes)
Sep 27 17:11:43 	charon 		08[NET] <12> received packet: from XX.XXX.XXX.XX[38588] to XX.XXX.XXX.XX[4500] (84 bytes)
Sep 27 17:11:43 	charon 		08[ENC] <12> parsed INFORMATIONAL_V1 request 386127813 [ HASH N((28)) ]
Sep 27 17:11:43 	charon 		08[IKE] <12> received (28) error notify

I can't find information about it. If you could help me I would really appreciate it.

Jose Luis.