Nevermind, I found lots of links elaborating on this issue, these are some of them:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160916-ikev1
https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-56516
...
Hi there,
I also have this problem.
The following was taken from the AWS marketplace site:
"The CSR 1000v is temporarily unavailable on AWS due to a vulnerability in Internet Key Exchange version 1 (IKEv1) packet processing code."
Is there a bug ...