I am unable to get VPN working on an iphone here (works fine on another one).
The iPhone gives up with:
Could not negotiate a connection with the remote PPP server. Please verify your settings and try again.
and the IPSec VPN logs say:
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: received Vendor ID payload [RFC 3947]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: ignoring Vendor ID payload [4df37928e9fc4fd1b3262170d515c662]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: ignoring Vendor ID payload [8f8d83826d246b6fc7a8a6a428c11de8]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: ignoring Vendor ID payload [439b59f8ba676c4c7737ae22eab8f582]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: ignoring Vendor ID payload [4d1e0e136deafa34c4f3ea9f02ec7285]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: ignoring Vendor ID payload [80d0bb3def54565ee84645d4c85ce3ee]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: ignoring Vendor ID payload [9909b64eed937c6573de52ace952fa6b]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-03]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: ignoring Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02_n]
2008:10:14-09:40:43 (none) pluto[32598]: packet from 120.16.82.160:500: received Vendor ID payload [Dead Peer Detection]
2008:10:14-09:40:43 (none) pluto[32598]: "D_REF_ZsaEIHMFYo_0"[4] 120.16.82.160 #91: responding to Main Mode from unknown peer 120.16.82.160
2008:10:14-09:40:44 (none) pluto[32598]: "D_REF_ZsaEIHMFYo_0"[4] 120.16.82.160 #91: NAT-Traversal: Result using RFC 3947: no NAT detected
2008:10:14-09:40:45 (none) pluto[32598]: "D_REF_ZsaEIHMFYo_0"[4] 120.16.82.160 #91: Peer ID is ID_IPV4_ADDR: '120.16.82.160'
2008:10:14-09:40:45 (none) pluto[32598]: "D_REF_ZsaEIHMFYo_0"[4] 120.16.82.160 #91: sent MR3, ISAKMP SA established
2008:10:14-09:40:46 (none) pluto[32598]: "D_REF_ZsaEIHMFYo_0"[4] 120.16.82.160 #91: ignoring informational payload, type IPSEC_INITIAL_CONTACT
2008:10:14-09:40:47 (none) pluto[32598]: "D_REF_ZsaEIHMFYo_0"[4] 120.16.82.160 #92: responding to Quick Mode
2008:10:14-09:40:48 (none) pluto[32598]: "D_REF_ZsaEIHMFYo_0"[4] 120.16.82.160 #92: Dead Peer Detection (RFC 3706) enabled
2008:10:14-09:40:48 (none) pluto[32598]: "D_REF_ZsaEIHMFYo_0"[4] 120.16.82.160 #92: IPsec SA established {ESP=>0x034218ae
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