[Openswan Users] malformed packages

[foren titze]

Hello,

I try to connct to my well functional ipsec/l2tp tunnel from my windowsXP 
client behind an Dlink 614+ Router with ipsec passthrough enabled and get 
this message below.
when I connect ONLY with my Windows Client without my router between, i can 
establish the connection.

have anyone a idea??

thanks


Jun 14 17:39:48 linux-vpn pluto[26446]: | NAT-T: new mapping 
82.82.111.63:500/60036)
Jun 14 17:39:48 linux-vpn pluto[26446]: "fiebiger"[3] 82.82.111.63:60036 #4: 
sent MR3, ISAKMP SA established
Jun 14 17:39:48 linux-vpn pluto[26446]: "fiebiger"[3] 82.82.111.63:60036 #4: 
retransmitting in response to duplicate packet; already STATE_MAIN_R3
Jun 14 17:39:50 linux-vpn pluto[26446]: "fiebiger"[3] 82.82.111.63:60036 #4: 
retransmitting in response to duplicate packet; already STATE_MAIN_R3
Jun 14 17:39:54 linux-vpn pluto[26446]: "fiebiger"[3] 82.82.111.63:60036 #4: 
discarding duplicate packet -- exhausted retransmission; already 
STATE_MAIN_R3
Jun 14 17:40:02 linux-vpn pluto[26446]: "fiebiger"[3] 82.82.111.63:60036 #4: 
discarding duplicate packet -- exhausted retransmission; already 
STATE_MAIN_R3
Jun 14 17:40:18 linux-vpn pluto[26446]: "fiebiger"[3] 82.82.111.63:60036 #4: 
discarding duplicate packet -- exhausted retransmission; already 
STATE_MAIN_R3
Jun 14 17:40:50 linux-vpn pluto[26446]: "fiebiger"[3] 82.82.111.63:60036 #4: 
byte 2 of ISAKMP Hash Payload must be zero, but is not
Jun 14 17:40:50 linux-vpn pluto[26446]: "fiebiger"[3] 82.82.111.63:60036 #4: 
malformed payload in packet
Jun 14 17:40:50 linux-vpn pluto[26446]: "fiebiger"[3] 82.82.111.63:60036 #4: 
sending notification PAYLOAD_MALFORMED to 82.82.111.63:60036