OK, strange question. I have SSH forwarding working with Vagrant. But I\'m trying to get it working when using Ansible as a Vagrant provisioner.
I found out exactly what
I've found that I need to do two separate things (on Ubuntu 12.04) to get it working:
-o ForwardAgent
adding /etc/sudoers.d/01-make_SSH_AUTH_SOCK_AVAILABLE with these contents:
/etc/sudoers.d/01-make_SSH_AUTH_SOCK_AVAILABLE
Defaults env_keep += "SSH_AUTH_SOCK"