Why does the ip appear in a different format?

Since I switched to cloudflare, some IP addresses appear in this format.

I’d like to know which setting does this and what the pros and cons are of the ip being displayed in this way.

Thank you

That format is IPv6.

You probably didn’t see any of these before because your server is only available via IPv4, but Cloudflare also makes it available via IPv6.

The old format (IPv4) simply didn’t have enough addresses for everyone. The new format (IPv6) is much longer to allow more different addresses.

You should also not publish other people’s IP address.

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That is an Pv6 address.

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I’ve just deleted the image on main topic. Thank you for the help.

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