Hi Makimoto,
If you want Ansible to rely on the ssh configuration file, you'll want
to use the OpenSSH transport instead of the Paramiko transport. You
can do this by specifying:
-c ssh
..on the command line. You can also use the variables ansible_ssh_host
and ansible_ssh_port in your inventory file if you just have a simple
port-based ssh jump host:
[myhosts]
realhost ansible_ssh_host=jumphost ansible_ssh_port=2222
...but I am not sure if this wil work in your circumstance.
Hope this helps!
-Tim