[Openswan Users] Tunnel Constantly Restarting -error: not enough room in input packet for ISAKMP Message

[Robyn Orosz]

Hi,

I'm connected to a Cisco PIX device and am able to establish a tunnel but
the tunnel appears to be constantly restarting and the following messages
keep repeating in the logs:

Feb  3 19:40:41 host pluto[19854]: | payload malformed after IV
Feb  3 19:40:41 host pluto[19854]: |
Feb  3 19:40:41 host pluto[19854]: packet from 192.168.18.150:500: sending
notification PAYLOAD_MALFORMED to 192.168.18.150:500
Feb  3 19:40:46 host pluto[19854]: packet from 192.168.18.150:500: not
enough room in input packet for ISAKMP Message (remain=0, sd->size=28)

I have searched and searched and have not found any possible solutions for
this issue.  The proposals appear to match on both sides as the tunnel does
establish and pass traffic.  It just keeps bouncing.

I can send debug level messages or provide more information if needed.

Here's the version / kernel info:

Linux Openswan U2.4.12/K2.6.24-1-486-vyatta (netkey)

Thank you,

Robyn
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