How to bind a domain to ip if there are several sites on this IP?

Question

Network administration

Hello.
There is site.ru with IP 111.111
There is newSite.ru with IP 222.222
It is necessary that newSite.ru content opens at site.ru.
The problem is that there are several sites on IP 222.222, on IP 222.222 itself the standard page "site parked successfully" opens.
If you change the IP site.ru to 222.222, will a new site open?
I think it will be "site parked".
Do I need to buy a separate IP 333.333 for newSite.ru in order to open the site using this IP?

Answer 1

Simply write in Apache or nginxe how to answer the request for the required site and in which directory to look for it