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