Am 2024-07-08 06:52, schrieb Ralph Seichter via Postfix-users:
* Allen Coates via Postfix-users:

I am blocking 2001:db8::/32 (of course); it's the Teredo prefix
which I am allowing.

I misunderstood the word "these" in your OP, and the subject line only
referenced the documentation prefix, but no harm done. I don't have any
numbers for connections from Teredo addresses at hand either, but the
services I am hosting are not aimed at specific client platforms anyway.

Similar to you I am mildly curious if Teredo has any relevance beyond
Xbox and a smattering of remaining Windows 10 installations these days.

Windows 10 version 1803 and later disable Teredo by default.

https://learn.microsoft.com/en-us/windows/whats-new/deprecated-features
 -> IPv4/6 Transition Technologies

As Teredo is a MS thing (invented and propagated by them), I would call it dead.

Bye,
Alexander.

--
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