Looks like you can indeed have private relay control on a network by network basis, when using wifi. Just look at your wifi network settings.
Also for users who have Pihole (like me too) then when you’re not on home wifi you could always WireGuard vpn back to your home network. Piholes website has a great tutorial on how to set this up. iCloud private relay gets sidelined when a vpn profile is in use.
or just turn iCloud private relay off.
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