EDIT: see comment below about QUIC. tl;dr my info was out if date
EDIT: see comment below about QUIC. tl;dr my info was out if date
An argument could be made for QUIC, though.
https://www.internetsociety.org/blog/2015/01/ipv6-security-m...
Note at the top of Brave's "QUIC in the wild" post[1] in 2017:
"Update: This post has been edited to correct errors of fact about developer tools and APIs with respect to QUIC. Also, the original post implied that Google might be using QUIC in an anti-competitive manner. We regret the errors, and we apologize for the implication."
Do you have a link to a more recent post from Brave about this?
But this really doesn't matter all that much to Google since regardless of how your browser session resumes you're probably still logged and/or are loaded with tracking cookies.
And IPv6 is... well IPv6. Nothing is really stopping you from NATing at your firewall if you want -- in fact, I highly recommend it for your private networks so you can use your ISP public-allocation as a pool of public addresses while having the whole IPv6 private address space to yourself.