here is some output from the RAP
9c:1c:12:cb:1d:46# show log rapper-brief
2016-12-02 20:24:04 RECV: f8b9dfe909f34859 : 6565f5b360972420 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:04 RECV: f8b9dfe909f34859 : 6565f5b360972420 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:04 RECV: f8b9dfe909f34859 : 6565f5b360972420 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:04 RECV: f8b9dfe909f34859 : 6565f5b360972420 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:04 RECV: f8b9dfe909f34859 : 6565f5b360972420 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:04 RECV: f8b9dfe909f34859 : 6565f5b360972420 , np=46, EXHG: IKE_AUTH
2016-12-02 20:24:04IKE FAILED err: RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 20:24:33 ConnectTo: 192.168.42.23
2016-12-02 20:24:34 SEND: 2bf3b68674e44305 : 0000000000000000 , np=33, EXHG: IKE_SA_INIT
2016-12-02 20:24:34 RECV: 2bf3b68674e44305 : 0000000000000000 , np=41, EXHG: IKE_SA_INIT
2016-12-02 20:24:34 SEND: 2bf3b68674e44305 : 0000000000000000 , np=41, EXHG: IKE_SA_INIT
2016-12-02 20:24:34 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=33, EXHG: IKE_SA_INIT
2016-12-02 20:24:35 SEND: 2bf3b68674e44305 : 4d88d91f31988476 , np=46, EXHG: IKE_AUTH
2016-12-02 20:24:35 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:35 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:35 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:35 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:35 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:35 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:35 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:35 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=132, EXHG: IKE_AUTH
2016-12-02 20:24:35 RECV: 2bf3b68674e44305 : 4d88d91f31988476 , np=46, EXHG: IKE_AUTH
2016-12-02 20:24:35IKE FAILED err: RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
9c:1c:12:cb:1d:46# show log rapper-counter
AP Mac: 9c:1c:12:cb:1d:46
TIME PEER IP COOKIES SPI EXCH ERR
---- ------- ------- --- ---- ---
2016-12-02 19:32:07 | 192.168.42.23 | {532c22eec2ab52ba : 7c7caf046f336fec} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:32:39 | 192.168.42.23 | {0ed614d0d9d9675e : 99bb4109970daf53} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:33:12 | 192.168.42.23 | {da5e48e211681fe4 : 558b9efd480072f8} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:33:43 | 192.168.42.23 | {57d77fd1ef2e3aac : 0d821bc24a0af796} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:34:14 | 192.168.42.23 | {731c8e24567e59c9 : 2ac113a2bd8774fe} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:34:46 | 192.168.42.23 | {99553d6b53a5a9ff : 9e576b7bf7ad252b} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:35:17 | 192.168.42.23 | {5a26dfae4fb000a9 : 741fa1f630cd6c2e} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:35:48 | 192.168.42.23 | {85b0caa71caca589 : 004fe1c992e5d5e1} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:36:20 | 192.168.42.23 | {d8756817998e8694 : 9e44b054df311094} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:36:52 | 192.168.42.23 | {c28b01d5bbf51ede : c3abecfbe2ce3c28} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:37:25 | 192.168.42.23 | {fa2c92481156eea0 : 4f9c5a834cd3373c} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:37:57 | 192.168.42.23 | {f9aebe387c718915 : 1fe8a44cca438c3d} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED
2016-12-02 19:38:28 | 192.168.42.23 | {85ebf9a4e9fc92d3 : 3d47e36846626bcd} | {0x00000000 : 0x00000000} | IKE_AUTH | RC_ERROR_ISAKMP_N_RSA_DECRYPTION_FAILED