How to use the haraka-net-utils.same_ipv4_network function in haraka-net-utils

const literal = net_utils.get_ipany_re('^\\[(?:IPv6:)?','\\]$','').exec(helo);
    if (!literal) {
        connection.results.add(plugin, {pass: 'literal_mismatch'});
        return next();
    }

    const lmm_mode = parseInt(plugin.cfg.check.literal_mismatch, 10);
    const helo_ip = literal[1];
    if (lmm_mode > 2 && net_utils.is_private_ip(helo_ip)) {
        connection.results.add(plugin, {pass: 'literal_mismatch(private)'});
        return next();
    }

    if (lmm_mode > 1) {
        if (net_utils.same_ipv4_network(connection.remote.ip, [helo_ip])) {
            connection.results.add(plugin, {pass: 'literal_mismatch'});
            return next();
        }

        connection.results.add(plugin, {fail: 'literal_mismatch'});
        if (plugin.cfg.reject.literal_mismatch) {
            return next(DENY, 'HELO IP literal not in the same /24 as your IP address');
        }
        return next();
    }

    if (helo_ip === connection.remote.ip) {
        connection.results.add(plugin, {pass: 'literal_mismatch'});
        return next();
    }