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A comment on A Love Letter to FreeBSD. Parent comment

Re:A Love Letter to FreeBSD by bluGill on Monday December 01, 2025 @11:49AM (#46109639)
That is the easy part - most of the core routers have supported ipv6 for decades - IIRC many are IPv6 only on the backbone. The hard part is if there is even one client that doesn't have the update you can't use the new non-legacy addresses as it can't talk to you.

Just like today, it is likely that most client will support your new address, but ISPs won't route them for you.

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Re:A Love Letter to FreeBSD by arthurfirst on Monday December 01, 2025 @06:19PM (#46114932)
Yes of course I know all that. That was the whole point of the overlay first approach. i.e. Build a network that works over the existing network before adding any barriers to entry like specialized hardware requirements.
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