Github user rhtyd commented on the pull request: https://github.com/apache/cloudstack/pull/872#issuecomment-218069657 @jayapalu I `did not` make any changes, I simply tested your PR. The NAT traversal is explicit in 4.x and in my environment your PR did not work for me for my clients as they were behind NAT (one could also say double NAT), but in 5.x strongswan project claims to work out of the box; which is why I'm `suggesting` you to consider using that package from wheezy-backports.
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