Addon domain is not working, read the below scenario

HI,

I have a dedicated server linux, and have 4 dedicated IP.

I have configured one shared ip and remaining 3 are normal added ips.

I have created new account and hosted a domain example1.com on shared IP (IP no. 1), and I have created new account and hosted a domain example2.com on 2nd IP (this 2nd ip is not shared ip). Both sites are working fine.

example1.com - shared IP (IP no. 1)
example2.com - 2nd IP (IP no. 2)

Now I added addon domain (example3.com), during addon domain creation, I have selected the same 2nd IP (not shared IP). Addon domain added and created all files and folder like /home/example2.com/example3.com.

Now when I access addon domain from web, I am getting main domain (example2.com) content instead of the addon domain (example3.com).

If I use shared IP for addon domain, then it is working correctly, the problem only if I create addon domain with other ip that is not a shared ip, then I am getting issue.

Please help.