mitchellh/vagrant — pull request #1537 by wormzer (2013-04-03 20:59:25+00:00)
Title: Additional proxy_command option

This commit adds the bare minimum to get an ec2 instance running where corporate network has port 22 blocked and an ssh proxy is in place. We use ~/.ssh/config ProxyCommand which takes care of any ssh/rsync system calls, but when net-ssh is in play we need to add this :proxy connection option to route correctly.