Github user swill commented on the issue:
https://github.com/apache/cloudstack/pull/872
If anyone has experience with Remote Access VPN on Windows and has any
insight into why the following is failing, please let me know.
**FAILING WINDOWS LOG:**
```
charon: 11[NET] received packet: from 74.121.xx.yy[1011] to
74.121.ff.gg[500]
charon: 11[NET] waiting for data on sockets
charon: 02[NET] received packet: from 74.121.xx.yy[1011] to
74.121.ff.gg[500] (408 bytes)
charon: 02[ENC] parsed ID_PROT request 0 [ SA V V V V V V V V ]
charon: 02[CFG] looking for an ike config for 74.121.ff.gg...74.121.xx.yy
charon: 02[CFG] candidate: 74.121.ff.gg...%any, prio 1052
charon: 02[CFG] found matching ike config: 74.121.ff.gg...%any with prio
1052
charon: 02[ENC] received unknown vendor ID:
01:52:8b:bb:c0:06:96:12:18:49:ab:9a:1c:5b:2a:51:00:00:00:01
charon: 02[IKE] received MS NT5 ISAKMPOAKLEY vendor ID
charon: 02[IKE] received NAT-T (RFC 3947) vendor ID
charon: 02[IKE] received draft-ietf-ipsec-nat-t-ike-02\n vendor ID
charon: 02[IKE] received FRAGMENTATION vendor ID
charon: 02[ENC] received unknown vendor ID:
fb:1d:e3:cd:f3:41:b7:ea:16:b7:e5:be:08:55:f1:20
charon: 02[ENC] received unknown vendor ID:
26:24:4d:38:ed:db:61:b3:17:2a:36:e3:d0:cf:b8:19
charon: 02[ENC] received unknown vendor ID:
e3:a5:96:6a:76:37:9f:e7:07:22:82:31:e5:ce:86:52
charon: 02[IKE] 74.121.xx.yy is initiating a Main Mode IKE_SA
charon: 02[IKE] IKE_SA (unnamed)[39] state change: CREATED => CONNECTING
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable DIFFIE_HELLMAN_GROUP found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable DIFFIE_HELLMAN_GROUP found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable DIFFIE_HELLMAN_GROUP found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable DIFFIE_HELLMAN_GROUP found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] no acceptable DIFFIE_HELLMAN_GROUP found
charon: 02[CFG] selecting proposal:
charon: 02[CFG] proposal matches
charon: 02[CFG] received proposals:
IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/ECP_384,
IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/ECP_256,
IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048,
IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048,
IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1024
charon: 02[CFG] configured proposals:
IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048,
IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1536,
IKE:AES_CBC_128/AES_CBC_192/AES_CBC_256/3DES_CBC/AES_CTR_128/AES_CTR_192/AES_CTR_256/CAMELLIA_CTR_128/CAMELLIA_CTR_192/CAMELLIA_CTR_256/CAMELLIA_CBC_128/CAMELLIA_CBC_192/CAMELLIA_CBC_256/HMAC_SHA1_96/HMAC_SHA2_256_128/HMAC_MD5_96/HMAC_SHA2_384_192/HMAC_SHA2_512_256/AES_XCBC_96/AES_CMAC_96/PRF_HMAC_SHA1/PRF_HMAC_SHA2_256/PRF_HMAC_MD5/PRF_HMAC_SHA2_384/PRF_HMAC_SHA2_512/PRF_AES128_XCBC/PRF_AES128_CMAC/MODP_2048/MODP_2048_224/MODP_2048_256/MODP_1536/MODP_3072/MODP_4096/MODP_8192/MODP_1024/MODP_1024_160,
IKE:AES_CCM_8_128/AES_CCM_8_192/AES_CCM_8_256/AES_CCM_12_128/AES_CCM_12_192/AES_CCM_12_256/AES_CCM_16_128/AES_CCM_16_192/AES_CCM_16_256/CAMELLIA_CCM_8_128/CAMELLIA_CCM_8_192/CAMELLIA_CCM_8_256/CAMELLIA_CCM_12_128/CAMELLIA_CCM_12_192/CAMELLIA_CCM_12_256/CAMELLIA_CCM_16_128/CAMELLIA_CCM_16_192/CAMELLIA_CCM_16_256/PRF_HMAC_SHA1/PRF_HMAC_SHA2_256/
PRF_HMAC_MD5/PRF_HMAC_SHA2_384/PRF_HMAC_SHA2_512/PRF_AES128_XCBC/PRF_AES128_CMAC/MODP_2048/MODP_2048_224/MODP_2048_256/MODP_1536/MODP_3072/MODP_4096/MODP_8192/MODP_1024/MODP_1024_160
charon: 02[CFG] selected proposal:
IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048
charon: 02[IKE] sending XAuth vendor ID
charon: 02[IKE] sending DPD vendor ID
charon: 02[IKE] sending NAT-T (RFC 3947) vendor ID
charon: 02[ENC] generating ID_PROT response 0 [ SA V V V ]
charon: 02[NET] sending packet: from 74.121.ff.gg[500] to
74.121.xx.yy[1011] (136 bytes)
charon: 08[NET] sending packet: from 74.121.ff.gg[500] to 74.121.xx.yy[1011]
charon: 11[NET] received packet: from 74.121.xx.yy[1011] to
74.121.ff.gg[500]
charon: 11[NET] waiting for data on sockets
charon: 05[NET] received packet: from 74.121.xx.yy[1011] to
74.121.ff.gg[500] (388 bytes)
charon: 05[ENC] parsed ID_PROT request 0 [ KE No NAT-D NAT-D ]
charon: 05[IKE] remote host is behind NAT
charon: 05[ENC] generating ID_PROT response 0 [ KE No NAT-D NAT-D ]
charon: 05[NET] sending packet: from 74.121.ff.gg[500] to
74.121.xx.yy[1011] (372 bytes)
charon: 08[NET] sending packet: from 74.121.ff.gg[500] to 74.121.xx.yy[1011]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 16[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (76 bytes)
charon: 16[ENC] parsed ID_PROT request 0 [ ID HASH ]
charon: 16[CFG] looking for pre-shared key peer configs matching
74.121.ff.gg...74.121.xx.yy[172.16.11.171]
charon: 16[CFG] candidate "L2TP-PSK", match: 1/1/1052 (me/other/ike)
charon: 16[CFG] selected peer config "L2TP-PSK"
charon: 16[IKE] IKE_SA L2TP-PSK[39] established between
74.121.ff.gg[74.121.ff.gg]...74.121.xx.yy[172.16.11.171]
charon: 16[IKE] IKE_SA L2TP-PSK[39] state change: CONNECTING => ESTABLISHED
charon: 16[ENC] generating ID_PROT response 0 [ ID HASH ]
charon: 16[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916] (76 bytes)
charon: 08[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 04[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (444 bytes)
charon: 04[ENC] parsed QUICK_MODE request 1 [ HASH SA No ID ID NAT-OA
NAT-OA ]
charon: 04[IKE] changing received traffic selectors
172.16.11.171/32[udp/l2f]=== 74.121.ff.gg/32[udp/l2f] due to NAT
charon: 04[CFG] looking for a child config for 74.121.ff.gg/32[udp/l2f] ===
74.121.xx.yy/32[udp/l2f]
charon: 04[CFG] proposing traffic selectors for us:
charon: 04[CFG] 74.121.ff.gg/32[udp/l2f]
charon: 04[CFG] proposing traffic selectors for other:
charon: 04[CFG] 0.0.0.0/0[udp]
charon: 04[CFG] candidate "L2TP-PSK" with prio 5+1
charon: 04[CFG] found matching child config "L2TP-PSK" with prio 6
charon: 04[CFG] selecting traffic selectors for other:
charon: 04[CFG] config: 0.0.0.0/0[udp], received: 74.121.xx.yy/32[udp/l2f]
=> match: 74.121.xx.yy/32[udp/l2f]
charon: 04[CFG] selecting traffic selectors for us:
charon: 04[CFG] config: 74.121.ff.gg/32[udp/l2f], received:
74.121.ff.gg/32[udp/l2f] => match: 74.121.ff.gg/32[udp/l2f]
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] proposal matches
charon: 04[CFG] received proposals:
ESP:AES_CBC_256/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ, ESP:NULL/HMAC_SHA1_96/NO_EXT_SEQ
charon: 04[CFG] configured proposals:
ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:AES_CBC_128/AES_CBC_192/AES_CBC_256/3DES_CBC/BLOWFISH_CBC_256/HMAC_SHA1_96/AES_XCBC_96/HMAC_MD5_96/NO_EXT_SEQ
charon: 04[CFG] selected proposal: ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ
charon: 04[IKE] received 3600s lifetime, configured 0s
charon: 04[IKE] received 250000000 lifebytes, configured 0
charon: 04[ENC] generating QUICK_MODE response 1 [ HASH SA No ID ID NAT-OA
NAT-OA ]
charon: 04[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916] (204 bytes)
charon: 08[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 01[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (60 bytes)
charon: 01[ENC] parsed QUICK_MODE request 1 [ HASH ]
charon: 01[CHD] using AES_CBC for encryption
charon: 01[CHD] using HMAC_SHA1_96 for integrity
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 14[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (444 bytes)
charon: 14[ENC] parsed QUICK_MODE request 4 [ HASH SA No ID ID NAT-OA
NAT-OA ]
charon: 14[IKE] changing received traffic selectors
172.16.11.171/32[udp/l2f]=== 74.121.ff.gg/32[udp/l2f] due to NAT
charon: 14[CFG] looking for a child config for 74.121.ff.gg/32[udp/l2f] ===
74.121.xx.yy/32[udp/l2f]
charon: 14[CFG] proposing traffic selectors for us:
charon: 14[CFG] 74.121.ff.gg/32[udp/l2f]
charon: 14[CFG] proposing traffic selectors for other:
charon: 14[CFG] 0.0.0.0/0[udp]
charon: 14[CFG] candidate "L2TP-PSK" with prio 5+1
charon: 14[CFG] found matching child config "L2TP-PSK" with prio 6
charon: 14[CFG] selecting traffic selectors for other:
charon: 14[CFG] config: 0.0.0.0/0[udp], received: 74.121.xx.yy/32[udp/l2f]
=> match: 74.121.xx.yy/32[udp/l2f]
charon: 14[CFG] selecting traffic selectors for us:
charon: 14[CFG] config: 74.121.ff.gg/32[udp/l2f], received:
74.121.ff.gg/32[udp/l2f] => match: 74.121.ff.gg/32[udp/l2f]
charon: 14[CFG] selecting proposal:
charon: 14[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 14[CFG] selecting proposal:
charon: 14[CFG] proposal matches
charon: 14[CFG] received proposals:
ESP:AES_CBC_256/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ, ESP:NULL/HMAC_SHA1_96/NO_EXT_SEQ
charon: 14[CFG] configured proposals:
ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:AES_CBC_128/AES_CBC_192/AES_CBC_256/3DES_CBC/BLOWFISH_CBC_256/HMAC_SHA1_96/AES_XCBC_96/HMAC_MD5_96/NO_EXT_SEQ
charon: 14[CFG] selected proposal: ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ
charon: 14[IKE] received 3600s lifetime, configured 0s
charon: 14[IKE] received 250000000 lifebytes, configured 0
charon: 14[IKE] detected rekeying of CHILD_SA L2TP-PSK{31}
charon: 14[ENC] generating QUICK_MODE response 4 [ HASH SA No ID ID NAT-OA
NAT-OA ]
charon: 14[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916] (204 bytes)
charon: 08[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 04[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (60 bytes)
charon: 04[ENC] parsed QUICK_MODE request 4 [ HASH ]
charon: 04[CHD] using AES_CBC for encryption
charon: 04[CHD] using HMAC_SHA1_96 for integrity
charon: 04[CHD] adding inbound ESP SA
charon: 04[CHD] SPI 0xcb67a786, src 74.121.xx.yy dst 74.121.ff.gg
charon: 04[CHD] adding outbound ESP SA
charon: 04[CHD] SPI 0xf47c9bd6, src 74.121.ff.gg dst 74.121.xx.yy
charon: 04[IKE] CHILD_SA L2TP-PSK{31} established with SPIs cb67a786_i
f47c9bd6_o and TS 74.121.ff.gg/32[udp/l2f] === 74.121.xx.yy/32[udp/l2f]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 01[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (76 bytes)
charon: 01[ENC] parsed INFORMATIONAL_V1 request 713875247 [ HASH D ]
charon: 01[IKE] received DELETE for ESP CHILD_SA with SPI 7cab1502
charon: 01[IKE] closing CHILD_SA L2TP-PSK{31} with SPIs ca86fad4_i (0
bytes) 7cab1502_o (0 bytes) and TS 74.121.ff.gg/32[udp/l2f] ===
74.121.xx.yy/32[udp/l2f]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 05[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (444 bytes)
charon: 05[ENC] parsed QUICK_MODE request 5 [ HASH SA No ID ID NAT-OA
NAT-OA ]
charon: 05[IKE] changing received traffic selectors
172.16.11.171/32[udp/l2f]=== 74.121.ff.gg/32[udp/l2f] due to NAT
charon: 05[CFG] looking for a child config for 74.121.ff.gg/32[udp/l2f] ===
74.121.xx.yy/32[udp/l2f]
charon: 05[CFG] proposing traffic selectors for us:
charon: 05[CFG] 74.121.ff.gg/32[udp/l2f]
charon: 05[CFG] proposing traffic selectors for other:
charon: 05[CFG] 0.0.0.0/0[udp]
charon: 05[CFG] candidate "L2TP-PSK" with prio 5+1
charon: 05[CFG] found matching child config "L2TP-PSK" with prio 6
charon: 05[CFG] selecting traffic selectors for other:
charon: 05[CFG] config: 0.0.0.0/0[udp], received: 74.121.xx.yy/32[udp/l2f]
=> match: 74.121.xx.yy/32[udp/l2f]
charon: 05[CFG] selecting traffic selectors for us:
charon: 05[CFG] config: 74.121.ff.gg/32[udp/l2f], received:
74.121.ff.gg/32[udp/l2f] => match: 74.121.ff.gg/32[udp/l2f]
charon: 05[CFG] selecting proposal:
charon: 05[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 05[CFG] selecting proposal:
charon: 05[CFG] proposal matches
charon: 05[CFG] received proposals:
ESP:AES_CBC_256/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ, ESP:NULL/HMAC_SHA1_96/NO_EXT_SEQ
charon: 05[CFG] configured proposals:
ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:AES_CBC_128/AES_CBC_192/AES_CBC_256/3DES_CBC/BLOWFISH_CBC_256/HMAC_SHA1_96/AES_XCBC_96/HMAC_MD5_96/NO_EXT_SEQ
charon: 05[CFG] selected proposal: ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ
charon: 05[IKE] received 3600s lifetime, configured 0s
charon: 05[IKE] received 250000000 lifebytes, configured 0
charon: 05[IKE] detected rekeying of CHILD_SA L2TP-PSK{31}
charon: 05[ENC] generating QUICK_MODE response 5 [ HASH SA No ID ID NAT-OA
NAT-OA ]
charon: 05[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916] (204 bytes)
charon: 08[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 16[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (60 bytes)
charon: 16[ENC] parsed QUICK_MODE request 5 [ HASH ]
charon: 16[CHD] using AES_CBC for encryption
charon: 16[CHD] using HMAC_SHA1_96 for integrity
charon: 16[CHD] adding inbound ESP SA
charon: 16[CHD] SPI 0xc5ee1900, src 74.121.xx.yy dst 74.121.ff.gg
charon: 16[CHD] adding outbound ESP SA
charon: 16[CHD] SPI 0x4c3a16f0, src 74.121.ff.gg dst 74.121.xx.yy
charon: 16[IKE] CHILD_SA L2TP-PSK{31} established with SPIs c5ee1900_i
4c3a16f0_o and TS 74.121.ff.gg/32[udp/l2f] === 74.121.xx.yy/32[udp/l2f]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 14[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (76 bytes)
charon: 14[ENC] parsed INFORMATIONAL_V1 request 4253829990 [ HASH D ]
charon: 14[IKE] received DELETE for ESP CHILD_SA with SPI f47c9bd6
charon: 14[IKE] closing CHILD_SA L2TP-PSK{31} with SPIs cb67a786_i (0
bytes) f47c9bd6_o (0 bytes) and TS 74.121.ff.gg/32[udp/l2f] ===
74.121.xx.yy/32[udp/l2f]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 13[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (444 bytes)
charon: 13[ENC] parsed QUICK_MODE request 6 [ HASH SA No ID ID NAT-OA
NAT-OA ]
charon: 13[IKE] changing received traffic selectors
172.16.11.171/32[udp/l2f]=== 74.121.ff.gg/32[udp/l2f] due to NAT
charon: 13[CFG] looking for a child config for 74.121.ff.gg/32[udp/l2f] ===
74.121.xx.yy/32[udp/l2f]
charon: 13[CFG] proposing traffic selectors for us:
charon: 13[CFG] 74.121.ff.gg/32[udp/l2f]
charon: 13[CFG] proposing traffic selectors for other:
charon: 13[CFG] 0.0.0.0/0[udp]
charon: 13[CFG] candidate "L2TP-PSK" with prio 5+1
charon: 13[CFG] found matching child config "L2TP-PSK" with prio 6
charon: 13[CFG] selecting traffic selectors for other:
charon: 13[CFG] config: 0.0.0.0/0[udp], received: 74.121.xx.yy/32[udp/l2f]
=> match: 74.121.xx.yy/32[udp/l2f]
charon: 13[CFG] selecting traffic selectors for us:
charon: 13[CFG] config: 74.121.ff.gg/32[udp/l2f], received:
74.121.ff.gg/32[udp/l2f] => match: 74.121.ff.gg/32[udp/l2f]
charon: 13[CFG] selecting proposal:
charon: 13[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 13[CFG] selecting proposal:
charon: 13[CFG] proposal matches
charon: 13[CFG] received proposals:
ESP:AES_CBC_256/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ, ESP:NULL/HMAC_SHA1_96/NO_EXT_SEQ
charon: 13[CFG] configured proposals:
ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ, ESP:3DES_CBC/HMAC_SHA1_96/NO_EXT_SEQ,
ESP:AES_CBC_128/AES_CBC_192/AES_CBC_256/3DES_CBC/BLOWFISH_CBC_256/HMAC_SHA1_96/AES_XCBC_96/HMAC_MD5_96/NO_EXT_SEQ
charon: 13[CFG] selected proposal: ESP:AES_CBC_128/HMAC_SHA1_96/NO_EXT_SEQ
charon: 13[IKE] received 3600s lifetime, configured 0s
charon: 13[IKE] received 250000000 lifebytes, configured 0
charon: 13[IKE] detected rekeying of CHILD_SA L2TP-PSK{31}
charon: 13[ENC] generating QUICK_MODE response 6 [ HASH SA No ID ID NAT-OA
NAT-OA ]
charon: 13[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916] (204 bytes)
charon: 08[NET] sending packet: from 74.121.ff.gg[4500] to
74.121.xx.yy[64916]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 12[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (60 bytes)
charon: 12[ENC] parsed QUICK_MODE request 6 [ HASH ]
charon: 12[CHD] using AES_CBC for encryption
charon: 12[CHD] using HMAC_SHA1_96 for integrity
charon: 12[CHD] adding inbound ESP SA
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 12[CHD] SPI 0xc5f602ad, src 74.121.xx.yy dst 74.121.ff.gg
charon: 11[NET] waiting for data on sockets
charon: 12[CHD] adding outbound ESP SA
charon: 12[CHD] SPI 0x09b7ea2c, src 74.121.ff.gg dst 74.121.xx.yy
charon: 12[IKE] CHILD_SA L2TP-PSK{31} established with SPIs c5f602ad_i
09b7ea2c_o and TS 74.121.ff.gg/32[udp/l2f] === 74.121.xx.yy/32[udp/l2f]
charon: 09[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (76 bytes)
charon: 09[ENC] parsed INFORMATIONAL_V1 request 1167094233 [ HASH D ]
charon: 09[IKE] received DELETE for ESP CHILD_SA with SPI 4c3a16f0
charon: 09[IKE] closing CHILD_SA L2TP-PSK{31} with SPIs c5ee1900_i (0
bytes) 4c3a16f0_o (0 bytes) and TS 74.121.ff.gg/32[udp/l2f] ===
74.121.xx.yy/32[udp/l2f]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 05[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (76 bytes)
charon: 05[ENC] parsed INFORMATIONAL_V1 request 3486435093 [ HASH D ]
charon: 05[IKE] received DELETE for ESP CHILD_SA with SPI 09b7ea2c
charon: 05[IKE] closing CHILD_SA L2TP-PSK{31} with SPIs c5f602ad_i (0
bytes) 09b7ea2c_o (0 bytes) and TS 74.121.ff.gg/32[udp/l2f] ===
74.121.xx.yy/32[udp/l2f]
charon: 16[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (92 bytes)
charon: 16[ENC] parsed INFORMATIONAL_V1 request 3988841069 [ HASH D ]
charon: 16[IKE] received DELETE for IKE_SA L2TP-PSK[39]
charon: 16[IKE] deleting IKE_SA L2TP-PSK[39] between
74.121.ff.gg[74.121.ff.gg]...74.121.xx.yy[172.16.11.171]
charon: 16[IKE] IKE_SA L2TP-PSK[39] state change: ESTABLISHED => DELETING
charon: 16[IKE] IKE_SA L2TP-PSK[39] state change: DELETING => DELETING
charon: 16[IKE] IKE_SA L2TP-PSK[39] state change: DELETING => DESTROYING
```
The same config works for Mac OSX.
SUCCESSFUL MAC LOG:
```
charon: 11[NET] received packet: from 74.121.xx.yy[1011] to
74.121.ff.gg[500]
charon: 11[NET] waiting for data on sockets
charon: 04[NET] received packet: from 74.121.xx.yy[1011] to
74.121.ff.gg[500] (788 bytes)
charon: 04[ENC] parsed ID_PROT request 0 [ SA V V V V V V V V V V V V ]
charon: 04[CFG] looking for an ike config for 74.121.ff.gg...74.121.xx.yy
charon: 04[CFG] candidate: 74.121.ff.gg...%any, prio 1052
charon: 04[CFG] found matching ike config: 74.121.ff.gg...%any with prio
1052
charon: 04[IKE] received NAT-T (RFC 3947) vendor ID
charon: 04[IKE] received draft-ietf-ipsec-nat-t-ike vendor ID
charon: 04[IKE] received draft-ietf-ipsec-nat-t-ike-08 vendor ID
charon: 04[IKE] received draft-ietf-ipsec-nat-t-ike-07 vendor ID
charon: 04[IKE] received draft-ietf-ipsec-nat-t-ike-06 vendor ID
charon: 04[IKE] received draft-ietf-ipsec-nat-t-ike-05 vendor ID
charon: 04[IKE] received draft-ietf-ipsec-nat-t-ike-04 vendor ID
charon: 04[IKE] received draft-ietf-ipsec-nat-t-ike-03 vendor ID
charon: 04[IKE] received draft-ietf-ipsec-nat-t-ike-02 vendor ID
charon: 04[IKE] received draft-ietf-ipsec-nat-t-ike-02\n vendor ID
charon: 04[IKE] received FRAGMENTATION vendor ID
charon: 04[IKE] received DPD vendor ID
charon: 04[IKE] 74.121.xx.yy is initiating a Main Mode IKE_SA
charon: 04[IKE] IKE_SA (unnamed)[40] state change: CREATED => CONNECTING
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable DIFFIE_HELLMAN_GROUP found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable PSEUDO_RANDOM_FUNCTION found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable ENCRYPTION_ALGORITHM found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable DIFFIE_HELLMAN_GROUP found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] no acceptable PSEUDO_RANDOM_FUNCTION found
charon: 04[CFG] selecting proposal:
charon: 04[CFG] proposal matches
charon: 04[CFG] received proposals:
IKE:AES_CBC_256/HMAC_SHA2_256_128/PRF_HMAC_SHA2_256/MODP_2048,
IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048,
IKE:AES_CBC_256/HMAC_MD5_96/PRF_HMAC_MD5/MODP_2048,
IKE:AES_CBC_256/HMAC_SHA2_512_256/PRF_HMAC_SHA2_512/MODP_2048,
IKE:AES_CBC_256/HMAC_SHA2_256_128/PRF_HMAC_SHA2_256/MODP_1536,
IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1536,
IKE:AES_CBC_256/HMAC_MD5_96/PRF_HMAC_MD5/MODP_1536,
IKE:AES_CBC_256/HMAC_SHA2_256_128/PRF_HMAC_SHA2_256/MODP_1024,
IKE:AES_CBC_256/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1024,
IKE:AES_CBC_256/HMAC_MD5_96/PRF_HMAC_MD5/MODP_1024,
IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1024,
IKE:AES_CBC_128/HMAC_MD5_96/PRF_HMAC_MD5/MODP_1024,
IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1024,
IKE:3DES_CBC/HMAC_MD5_96/PRF_HMAC_MD5/MODP_1024
charon: 04[CFG] configured proposals:
IKE:AES_CBC_128/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_2048,
IKE:3DES_CBC/HMAC_SHA1_96/PRF_HMAC_SHA1/MODP_1536,
IKE:AES_CBC_128/AES_CBC_192/AES_CBC_256/3DES_CBC/AES_CTR_128/AES_CTR_192/AES_CTR_256/CAMELLIA_CTR_128/CAMELLIA_CTR_192/CAMELLIA_CTR_256/CAMELLIA_CBC_128/CAMELLIA_CBC_192/CAMELLIA_CBC_256/HMAC_SHA1_96/HMAC_SHA2_256_128/HMAC_MD5_96/HMAC_SHA2_384_192/HMAC_SHA2_512_256/AES_XCBC_96/AES_CMAC_96/PRF_HMAC_SHA1/PRF_HMAC_SHA2_256/PRF_HMAC_MD5/PRF_HMAC_SHA2_384/PRF_HMAC_SHA2_512/PRF_AES128_XCBC/PRF_AES128_CMAC/MODP_2048/MODP_2048_224/MODP_2048_256/MODP_1536/MODP_3072/MODP_4096/MODP_8192/MODP_1024/MODP_1024_160,
IKE:AES_CCM_8_128/AES_CCM_8_192/AES_CCM_8_256/AES_CCM_12_128/AES_CCM_12_192/AES_CCM_12_256/AES_CCM_16_128/AES_CCM_16_192/AES_CCM_16_256/CAMELLIA_CCM_8_128/CAMELLIA_CCM_8_192/CAMELLIA_CCM_8_256/CAMELLIA_CCM_12_128/CAMELLIA_CCM_12_192/CAMELLIA_CCM_12_256/CAMELLIA_CCM_16_128/CAMELLIA_CCM_16_192/CAMELLIA_CCM_16_256/PRF_HMAC_SHA1/PRF_HMAC_SHA2_256/
PRF_HMAC_MD5/PRF_HMAC_SHA2_384/PRF_HMAC_SHA2_512/PRF_AES128_XCBC/PRF_AES128_CMAC/MODP_2048/MODP_2048_224/MODP_2048_256/MODP_1536/MODP_3072/MODP_4096/MODP_8192/MODP_1024/MODP_1024_160
charon: 04[CFG] selected proposal:
IKE:AES_CBC_256/HMAC_SHA2_256_128/PRF_HMAC_SHA2_256/MODP_2048
charon: 04[IKE] sending XAuth vendor ID
charon: 04[IKE] sending DPD vendor ID
charon: 04[IKE] sending NAT-T (RFC 3947) vendor ID
charon: 04[ENC] generating ID_PROT response 0 [ SA V V V ]
charon: 04[NET] sending packet: from 74.121.ff.gg[500] to
74.121.xx.yy[1011] (136 bytes)
charon: 08[NET] sending packet: from 74.121.ff.gg[500] to 74.121.xx.yy[1011]
charon: 11[NET] received packet: from 74.121.xx.yy[1011] to
74.121.ff.gg[500]
charon: 11[NET] waiting for data on sockets
charon: 01[NET] received packet: from 74.121.xx.yy[1011] to
74.121.ff.gg[500] (380 bytes)
charon: 01[ENC] parsed ID_PROT request 0 [ KE No NAT-D NAT-D ]
charon: 01[IKE] remote host is behind NAT
charon: 01[ENC] generating ID_PROT response 0 [ KE No NAT-D NAT-D ]
charon: 01[NET] sending packet: from 74.121.ff.gg[500] to
74.121.xx.yy[1011] (396 bytes)
charon: 08[NET] sending packet: from 74.121.ff.gg[500] to 74.121.xx.yy[1011]
charon: 11[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500]
charon: 11[NET] waiting for data on sockets
charon: 06[NET] received packet: from 74.121.xx.yy[64916] to
74.121.ff.gg[4500] (108 bytes)
charon: 06[ENC] parsed ID_PROT request 0 [ ID HASH N(INITIAL_CONTACT) ]
charon: 06[CFG] looking for pre-shared key peer configs matching
74.121.ff.gg...74.121.xx.yy[172.16.11.144]
charon: 06[CFG] candidate "L2TP-PSK", match: 1/1/1052 (me/other/ike)
xl2tpd[2263]: control_finish: Peer requested tunnel 32 twice, ignoring
second one.
xl2tpd[2263]: Connection established to 74.121.xx.yy, 55281. Local: 16822,
Remote: 32 (ref=0/0). LNS session is 'default'
xl2tpd[2263]: start_pppd: I'm running:
xl2tpd[2263]: "/usr/sbin/pppd"
xl2tpd[2263]: "passive"
xl2tpd[2263]: "nodetach"
xl2tpd[2263]: "10.10.2.1:10.10.2.2"
xl2tpd[2263]: "refuse-pap"
xl2tpd[2263]: "file"
xl2tpd[2263]: "/etc/ppp/options.xl2tpd"
xl2tpd[2263]: "ipparam"
xl2tpd[2263]: "74.121.xx.yy"
xl2tpd[2263]: "/dev/pts/1"
xl2tpd[2263]: Call established with 74.121.xx.yy, Local: 22684, Remote:
32335, Serial: 1
charon: 04[KNL] 10.10.2.1 appeared on ppp0
charon: 06[KNL] 10.10.2.1 disappeared from ppp0
charon: 12[KNL] 10.10.2.1 appeared on ppp0
charon: 03[KNL] interface ppp0 activated
charon: 02[IKE] keeping connection path 74.121.ff.gg - 74.121.xx.yy
charon: 02[IKE] keeping connection path 74.121.ff.gg - 74.121.xx.yy
ntpd[3211]: Listen normally on 12 ppp0 10.10.2.1 UDP 123
ntpd[3211]: peers refreshed
```
Any insights welcome. :)
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