[ih] ARPANET pioneer Jack Haverty says the internet was never finished

[Miles Fidelman]

Joe Touch via Internet-history wrote:
>
>> On Mar 4, 2022, at 12:44 PM, John Gilmore <gnu at toad.com> wrote:
>>
>> Joe Touch wrote:
>>> Multicast needs to include L2.  Without that, routers would need to do
>>> serial copy for every host inside each L2, which is prohibitive ...
>> By that view YouTube, Zoom, podcasts, and CDNs are all "prohibitive".
> They copy at the source at the app layer, not in L2 anywhere.
>
> it’s not the BW, but the local serial copy operation and it’s state that are prohibitive.
>
No more prohibitive than doing it as an overlay.  If anything, it's more 
complex and resource intensive as an overlay.  (Granted that we're 
talking multiple overlays - but the cost here is interoperability.)

It's the same logic that applies to supporting a file system in 
userspace, vs. supporting it as a kernel module.

Miles

-- 
In theory, there is no difference between theory and practice.
In practice, there is.  .... Yogi Berra

Theory is when you know everything but nothing works.
Practice is when everything works but no one knows why.
In our lab, theory and practice are combined:
nothing works and no one knows why.  ... unknown