> Make sure to check documentation https://clickhouse.com/docs/en/ first. If the question is concise and probably has a short answer, asking it in Telegram chat https://telegram.me/clickhouse_en is probably the fastest way to find the answer. For more complicated questions, consider asking them on StackOverflow with "clickhouse" tag https://stackoverflow.com/questions/tagged/clickhouse 

> If you still prefer GitHub issues, remove all this text and ask your question here.

`            <networks incl="networks" replace="replace">
                <ip>127.0.0.1</ip>
                <host_regexp>^abc00[1-6]$</host_regexp>
            </networks>
`
`clickhouse-client --host abc003
ClickHouse client version 22.8.2.11 (official build).
Connecting to abc003:9000 as user default.

If you have installed ClickHouse and forgot password you can reset it in the configuration file.
The password for default user is typically located at /etc/clickhouse-server/users.d/default-password.xml
and deleting this file will reset the password.
See also /etc/clickhouse-server/users.xml on the server where ClickHouse is installed.

Code: 516. DB::Exception: Received from abc003:9000. DB::Exception: default: Authentication failed: password is incorrect or there is no user with such name. (AUTHENTICATION_FAILED)`


`if use <host> no problem`
{
        
        static const std::vector<IPAddress> local_addresses = getAddressesOfLocalhostImpl();
        return boost::range::find(local_addresses, toIPv6(address)) != local_addresses.end();
    }
    
    Strings getHostsByAddress(const IPAddress & address)
    {
        auto hosts = DNSResolver::instance().reverseResolve(address);
        if (hosts.empty())
            throw Exception(ErrorCodes::DNS_ERROR, "{} could not be resolved", address.toString());
        for (const auto & host : hosts)
        {
            
            if (!isAddressOfHost(address, host))
                throw Exception(ErrorCodes::DNS_ERROR, "Host {} isn't resolved back to {}", host, address.toString());
        }
        return hosts;
    }
    void parseLikePatternIfIPSubnet(const String & pattern, IPSubnet & subnet, IPAddress::Family address_family)
    {
        size_t slash = pattern.find('/');
        if (slash != String::npos)
        {
            
            subnet = IPSubnet{pattern};