I note that I ran into this loop, adding Containers along with Library, in versions 6.3.5 and 6.3.6. Thankfully, I found this post.
But the solution was more than simply 'Remove all Sandbox permissions'. I also had to:
Enable Global permissions. This covered all my browsers.
Click "Enable" for EACH browser down my list.
Approve of the resulting (all too familiar) requests for permissions: Library and Containers. Just once!
Cookie is now sane again.
I sorted this myself - it wasn't working because iCloud Drive wasn't enabled. I don't use ICD for anything so I didn't have it turned on. Hopefully this helps anyone else coming across the problem (a blurb about that in the preferences might be a good idea).
That is the correct behaviour. The Address in System Preferences shows you the Hardware Mac Address. This is the default address and can not be changed without physically replacing the wireless card in your Mac. Your MAC address will always reset to this on a computer restart.
WifiSpoof changes the software MAC address. This is what your computer broadcasts to other devices.
@sweetp Hi Russell, For other reasons I've had to rollback from Big Sur to Mojave of which I have the latest update, 10.14.6 (18G7016). I have installed Cookie 220.127.116.11. There is still an issue with this which may be a permissions problem. Even though I've unchecked the Apple website as a favourite, I still cannot delete the cookies.
Sorry I didn't get back to you sooner, thought there would be a notification of your reply. Cheers!