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Can you use another server as an additional IP?
If you set up a vpn connection between servers or something similar, could you use the IP from server B exclusively with server A?
And be able to use the additional IP in like cPanel, almost as if you bought an extra IP from server A’s provider, so without affecting the functionality of server A’s original IP
Comments
And if you can, then can you do more and have, say 8 IPs from different servers as additional IPs?
Yes you can.
https://yoursunny.com/t/2023/borrow-ipv4/
Ha I was kinda hoping I’d hear from you and I think that’s what I’ve been looking for! I tried ChatGPT yesterday but gave up. Thanks a lot
Very cool technique, didn’t know it was possible without a second IPv4 on server A, or NAT. The missing piece of the puzzle was how to maintain IPv4 connectivity on A after removing its own IP address
I have typically used wireguard over ipv6 and an nftables ‘dport !=‘ rule to nat port forward almost all ports at once. Tcp iperf3 performance remains good, typical wireguard losses but not more than a few %