mode http
    {% for k in o["redirect"] %}
    redirect prefix {{ o["redirect"][k] }} code 301 if { hdr(host) -i {{ k }} }
    {% endfor %}
    {% for k in o["hosts"] %}
        {% set host = k.replace(".", "_") + "_{0}_{1}".format(o["port"], salt) %}

    acl is_rule_{{ host }}_1 hdr(host) -i {{ k }}
    acl is_rule_{{ host }}_2 hdr(host) -i {{ k }}:{{ o["port"] }}
    use_backend srv_{{ host }} if is_rule_{{ host }}_1 OR is_rule_{{ host }}_2
    {% endfor %}