I'm trying to setup an IPSEC VPN to a Netgear DG834 but having no success. Tried all combinations!
The VPN Setup Guide in the FAQs for Vigor to Netgear shows what are obviously older versions of the GUI.

The log shows:

encrypted Informational Exchange message is invalid because it is for incomplete ISAKMP SA
12 10:25:08 04/02 receive ISAKMP packet: src:{xxx.xxx.xxx.xxx}, dst:{192.168.29.101}, MsgID:{0x841862e8}, Ci:{9F 38 B1 56 66 A7 9E 92}, Cr:{74 2D 82 AF 95 AB 9B E6}
13 10:25:08 04/02 {1_Jarek_test}:sent MI3, expecting MR3.
14 10:25:08 04/02 {1_Jarek_test}:emitting initial contact payload
15 10:25:08 04/02 {1_Jarek_test}:receive MainR2
16 10:25:08 04/02 receive ISAKMP packet: src:{xxx.xxx.xxx.xxx}, dst:{192.168.29.101}, MsgID:{0x00000000}, Ci:{9F 38 B1 56 66 A7 9E 92}, Cr:{74 2D 82 AF 95 AB 9B E6}
17 10:25:08 04/02 {1_Jarek_test}:sent MI2, expecting MR2.
18 10:25:08 04/02 {1_Jarek_test}:receive MainR1
19 10:25:08 04/02 received Vendor ID payload [Dead Peer Detection]
20 10:25:08 04/02 ignoring Vendor ID payload [4f457a7d6d6c5e54...]
21 10:25:08 04/02 receive ISAKMP packet: src:{xxx.xxx.xxx.xxx}, dst:{192.168.29.101}, MsgID:{0x00000000}, Ci:{9F 38 B1 56 66 A7 9E 92}, Cr:{74 2D 82 AF 95 AB 9B E6}
22 10:25:08 04/02 {1_Jarek_test}:send ISAKMP MainI1
23 10:24:48 04/02 {1_Jarek_test}: STATE_MAIN_I3: retransmission; will wait 20s for response

Any ideas?