Unable to handle special domains

[waterghost-2046]

For example, only the main domain called mc.com points to a valid IP, and other subdomains do not have any records. However, when you access the IP pointed to by mc.com and specify the subdomain, if you specify the subdomain as the host, the domain will be accessed. It cannot be found, and if it is set as the main domain, the path is not specified internally because it is not connected to the subdomain.