modules:
    http_2xx:
        prober: http
        timeout: 5s
        http:
            valid_http_versions:
                - HTTP/1.1
                - HTTP/2.0
            preferred_ip_protocol: ip4
            ip_protocol_fallback: true
            follow_redirects: true
        tcp:
            ip_protocol_fallback: true
        icmp:
            ip_protocol_fallback: true
        dns:
            ip_protocol_fallback: true