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A comment on Enabling IPv6 support for GitHub Pages. Parent comment

Re:Enabling IPv6 support for GitHub Pages by kazen44 on Friday October 01, 2021 @04:00PM (#28722756)
this comments hit up a good point,

the lower in the OSI stack you go, the harder it is to initiate change.

There is still some (mostly industrial) hardware that has lackluster TCP/IP support at best (for instance, assuming the netmask is always a /24...).

migrating these networks to ipv6 is not possible, and doing 6to4 adds a crapton of complexity.

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Re:Enabling IPv6 support for GitHub Pages by azernik on Friday October 01, 2021 @09:04PM (#28725084)
It's not about "lower".

We can, and do, make massive , non-backwards-compatible changes in layers 1 and 2 every few years and no one is the wiser. Layer 3 is special. It makes that flexibility in all the other layers possible, but keeps none for itself.

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Re:Enabling IPv6 support for GitHub Pages by kazen44 on Sunday October 03, 2021 @02:15PM (#28739221)
mind you though, that layer 3 and 4 are somewhat interlinked.
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