This is a great post. I often forget that home Internet connections are frequently shared between many people.
This bit:
> IPv6 everywhere to reduce the latency
I am not an expert on IPv4 vs IPv6. Teach me: How will migrating to IPv6 reduce latency? As I understand, a lot of home Internet connections are always effectively IPv6 via CarrierNAT. (Am I wrong? Or not relevant to your point?)
> Google has measured to most customers about 20ms less latency on IPv6 than on IPv4, according to their IPv6 report.
I've run that comparison across four ISPs and never seen any significant difference in latency... not once in the decades I've had "dual stack" service.
I imagine that Google is getting confounded by folks with godawful middle/"security"ware that is too stupid to know how to handle IPv6 traffic and just passes it through.
This bit:
I am not an expert on IPv4 vs IPv6. Teach me: How will migrating to IPv6 reduce latency? As I understand, a lot of home Internet connections are always effectively IPv6 via CarrierNAT. (Am I wrong? Or not relevant to your point?)