I have a server hosting several websites.
From time to time I migrate the websites on a second server to get the latest hardware and software.
The second server has a different IP and this causes the problem that any user not using my nameservers (and their automatically updated DNS zones) has to manually update the IP (for example if the user is using cloudflare)
Can you think of any way I can update my hardware and software without having to use a different IP?