我已经使用PSKconfiguration了带有IPSec / L2TP的MS Server 2003 RRAS。 iPhone设备连接正常，但Android设备无法连接。 MS“Oakley”跟踪文件显示苹果和Android的谈判遵循类似的path，直到隧道连接大部分完成，然后我看到：
2-06: 17:15:24:788:c98 Sending: SA = 0x0014B770 to XXX.XXX.90.176:Type 4.4500 2-06: 17:15:24:788:c98 ISAKMP Header: (V1.0), len = 76 2-06: 17:15:24:788:c98 I-COOKIE 05ba0fca40358ea5 2-06: 17:15:24:788:c98 R-COOKIE 249f8fb9b53208ed 2-06: 17:15:24:788:c98 exchange: Oakley Quick Mode 2-06: 17:15:24:788:c98 flags: 3 ( encrypted commit ) 2-06: 17:15:24:788:c98 next payload: HASH 2-06: 17:15:24:788:c98 message ID: f0a0f242 2-06: 17:15:24:788:c98 Ports S:9411 D:9411 2-06: 17:15:26:617:65c SocketError 10054 2-06: 17:15:28:679:65c SocketError 10054 2-06: 17:15:32:663:65c SocketError 10054 2-06: 17:15:40:663:65c SocketError 10054 2-06: 17:15:50:695:65c SocketError 10054 2-06: 17:16:47:929:c98 CE Dead. sa:0014B770 ce:000DF868 status:35f0 我已经尝试了这个软糖和姜饼装置，结果是一样的
这里是来自姜饼的adb logcat：
I/racoon (11163): initiate new phase 2 negotiation: 192.168.2.27[4500]<=>XXX.XXX.125.226[4500] I/racoon (11163): NAT detected -> UDP encapsulation (ENC_MODE 2->61444). W/racoon (11163): ignore RESPONDER-LIFETIME notification. W/racoon (11163): attribute has been modified. I/racoon (11163): Adjusting my encmode UDP-Transport->Transport I/racoon (11163): Adjusting peer's encmode UDP-Transport(61444)->Transport(2) W/racoon (11163): ignore CONNECTED notification. I/racoon (11163): IPsec-SA established: ESP/Transport XXX.XXX.125.226[0]->192.168.2.27[0] spi=197781845(0xbc9e955) I/racoon (11163): IPsec-SA established: ESP/Transport 192.168.2.27[4500]->XXX.XXX.125.226[4500] spi=3463706620(0xce73f7fc) D/mtpd (11485): Timeout -> Sending SCCRQ D/mtpd (11485): Received SCCRP without valid challenge response E/mtpd (11485): Protocol error D/mtpd (11485): Sending STOPCCN I/mtpd (11485): Mtpd is terminated (status = 5) I/SProxy_mtpd(10676): got data from control socket: 5 E/VpnService(10676): onError() E/VpnService(10676): com.android.server.vpn.VpnConnectingError: Connecting error: 5 E/VpnService(10676): at com.android.server.vpn.VpnService.onError(VpnService.java:171) E/VpnService(10676): at com.android.server.vpn.VpnService.waitUntilConnectedOrTimedout(VpnService.java:198) E/VpnService(10676): at com.android.server.vpn.VpnService.onConnect(VpnService.java:136) E/VpnService(10676): at com.android.server.vpn.VpnServiceBinder$2.run(VpnServiceBinder.java:117) E/VpnService(10676): at java.lang.Thread.run(Thread.java:1019) I/VpnService(10676): disconnecting VPN... D/VpnSettings( 8921): received connectivity: Mdc: connected? DISCONNECTING err=0 I/StatusBarManagerService( 123): ADD-Mdc VPN disconnected , 0x7f020001 I/SProxy_mtpd(10676): Stop VPN daemon: mtpd D/SProxy_mtpd(10676): mtpd is stopped after 0 msec D/SProxy_mtpd(10676): stopping mtpd, success? true I/SProxy_racoon(10676): Stop VPN daemon: racoon I/racoon (11163): Bye D/SProxy_racoon(10676): racoon is stopped after 0 msec D/SProxy_racoon(10676): stopping racoon, success? true D/VpnService(10676): onFinalCleanUp() I/VpnService(10676): restore original suffices --> null D/dalvikvm( 196): GC_EXTERNAL_ALLOC freed 506K, 58% free 2991K/7047K, external3443K/3473K, paused 30ms D/VpnSettings( 8921): received connectivity: Mdc: connected? IDLE err=5