user@client:~/opt/nmap/bin$ sudo ifconfig eth0 inet6 add 3ffe::61/64 user@client:~/opt/nmap/bin$ sudo ./nping --echo-client "public" 3ffe::60 -6 -d4 Nping will send packets at raw IP level Starting Nping 0.6.41SVN ( http://nmap.org/nping ) at 2013-09-25 17:30 EEST Resolving specified targets... 1 target IP address determined. Next target returned by getNextTarget(): Targets[0/1] --> 3ffe::60 start(0x1b25020, 9929) nep_connect(0x1b25020, 9929) connect_done_handler() nep_handshake() recv_hs_server_handler() nep_recv_hs_server_handler() parse_hs_server() deriveKey() generateNonce() generateNonce() deriveKey() deriveKey() deriveKey() deriveKey() Session Key MAC_C2S: 0000 49 95 1b 37 ec 18 6a 4c e9 d4 a3 0c e6 07 da 7d I..7..jL.......} Session Key MAC_S2C: 0000 e4 4e c1 f8 5d ed 7e f7 aa ed cf 07 39 33 42 c4 .N..].~.....93B. Session Key CIPHER_C2S: 0000 ef 27 06 69 9a b6 62 ed 51 b5 00 ce 22 dc a2 79 .'.i..b.Q..."..y Session Key CIPHER_S2C: 0000 ae 81 ec be 7d 27 d8 21 ec be 20 58 ee f8 82 ea ....}'.!...X.... generate_hs_client() encrypt(0x672a9c, 16, 0x672adc) aes128_cbc_encrypt(0x7fff9a68b370, 32, 0x7fff9a68d750, 0x672a9c, 16, 0x672adc) write_done_handler() recv_hs_final_handler() nep_recv_hs_final_handler() parse_hs_final() decrypt(0x672aac, 16, 0x672abc) aes128_cbc_decrypt(0x7fff9a686830, 32, 0x7fff9a688c30, 0x672aac, 16, 0x672abc) OpenSSL bug: it says EVP_DecryptFinal() failed when it didn't (error:06065064:lib(6):func(101):reason(100)). ===NEP Handshake completed successfully=== nep_send_packet_spec() generate_packet_spec() encrypt(0x672a9c, 16, 0x672a5c) aes128_cbc_encrypt(0x7fff9a68b320, 128, 0x7fff9a68d750, 0x672a9c, 16, 0x672a5c) write_done_handler() nep_recv_ready() recv_ready_handler() recv_ready_handler(): Read operation failed. Didn't receive server's OK. Next target returned by getNextTarget(): Targets[0/1] --> 3ffe::60 Max rtt: N/A | Min rtt: N/A | Avg rtt: N/A Raw packets sent: 0 (0B) | Rcvd: 0 (0B) | Lost: 0 (0.00%)| Echoed: 0 (0B) Tx time: 0.00000s | Tx bytes/s: 0.00 | Tx pkts/s: 0.00 Rx time: 0.00000s | Rx bytes/s: 0.00 | Rx pkts/s: 0.00 Nping done: 1 IP address pinged in 0.90 seconds user@client:~/opt/nmap/bin$ exit