Host {{ hostvars[dyndns_server].host_name }}.{{ hostvars[dyndns_server].host_domain }}
   Port {{ hostvars[dyndns_server].ansible_port }}
   User {{ hostvars[dyndns_server].user | default('dyndns') }}
   IdentityFile {{ dyndns_user.ssh_key_file }}
   IdentitiesOnly yes
   PasswordAuthentication no