ansible_ssh_common_args: '-o ProxyCommand="ssh -q -W %h:%p -p {{ JUMPER_PORT }} root@{{ JUMPER_IP }}"'

ansible -i $PWD all
-m ping
--extra-vars="JUMPER_IP=10.X.X.X JUMPER_PORT=6666"

<---> (255, b'', b'ssh: illegal option -- -
usage: ssh [-1246AaCfGgKkMNnqsTtVvXxYy] [-b bind_address] [- c cipher_spec]
   [-D [bind_address:]port] [- E log_file] [-e escape_char]
   [-F configfile] [-I pkcs11] [-i identity_file]
   [-J [user@]host[:port]] [-L address] [-l login_name] [-m mac_spec]
   [-O ctl_cmd] [-o option] [- p port] [-Q query_option] [-R address]
   [-S ctl_path] [-W host:port] [-w local_tun[:remote_tun]]
   [user@]hostname [command]
')

<global> SSH: EXEC ssh -C -o
ControlMaster=auto -o .
ControlPersist=60s -o
KbdInteractiveAuthentication=no
-o PreferredAuthentications=gssapi-with-mic,gssapi- keyex,hostbased,publickey
-o PasswordAuthentication=no
-o ConnectTimeout=10
-o 'ProxyCommand=ssh -q -W %h:%p
-p 6666 root@10.X.X.X'
-o ControlPath=/Users/me/.ansible/cp/853aabe504
global '/bin/sh -c '"'"'echo ~ && sleep 0'"'"''

--- | UNREACHABLE! => {
    "changed": false,
    "msg": "Failed to connect to the host via ssh: ssh: illegal option --
    -nusage: ssh [-1246AaCfGgKkMNnqsTtVvXxYy] [-b bind_address] [-c
    cipher_spec]n           [-D [bind_address:]port] [-E log_file] [-e
    escape_char]n           [-F configfile] [-I pkcs11] [-i
    identity_file]n           [-J [user@]host[:port]] [-L address] [-l .
    login_name] [-m mac_spec]n           [-O ctl_cmd] [-o option] [-p
    port] [-Q query_option] [-R address]n           [-S ctl_path] [-W
    host:port] [-w local_tun[:remote_tun]]n           [user@]hostname
    [command]n",
    "unreachable": true
}