[Swan-commit] Changes to ref refs/heads/master

[Tuomo Soini]

New commits:
commit ab3e9355cac22ded23cb3a69c01ffd5e8ed43704
Author: Tuomo Soini <tis at foobar.fi>
Date:   Tue Feb 25 00:31:36 2020 +0200

    nat_traversal: Fix not to send nat-t keepalives when there is no nat