Linux networking tip: if your box is on a fixed network, always set net.ipv6.conf.forwarding=1. "Forwarding" is a misnomer; it means "is not a dynamic host" and is needed to suppress ability for malicious peers on lan to reconfigure your interfaces & routing.
It's one feature you may or may not want, but "unauthenticated peer can reconfigure your network interfaces" is generally a security misdesign, and it's certainly not "the whole idea of v6".
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If you want a tweet-sized version of "the whole idea of IPv6", it's just "4 billion addresses is nowhere near enough". Everything beyond that is basically "hey while we're at it we could add this feature too..."
Thanks. Twitter will use this to make your timeline better. UndoUndo
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