[ih] error detection

[Joseph Touch]

> On Oct 1, 2020, at 3:22 PM, Lawrence Stewart via Internet-history <internet-history at elists.isoc.org> wrote:
> 
> The properties that make a good end-to-end checksum are a little different:

Agreed, but...
> 
> ...
> * you’d like them to be <modifiable> if possible, so that a router can calculate a change to a checksum without recomputing the whole thing possibly based on erroneous data
> …


this particular requirement undermines the core of the definition of E2E.

Joe