{%- macro keepalived_config(data) -%}
  {%- if data is none -%}
{{ '\n' }}
  {%- elif data is mapping -%}
    {%- for key, value in data.iteritems() -%}
{{ key }} {{ keepalived_config(value) }}
    {%- endfor -%}
  {%- else -%}
{{ data }}{{ '\n' }}
  {%- endif -%}
{%- endmacro -%}