Behaviour on MTU problem

[M. Dietrich]

Quotation from Art Botterell at August 30, 2021 21:55:
> One reads about fragmentation-induced failures and about 
> various MTU values that did or didn't work in a particular 
> situation.  [...]  what we could look out for in order 
> automatically to detect MTU issues [...] Is there some sort 
> of a ‘fragtest’ network utility out there?

My request was neither about anekdotic problems with different 
MTU sizes nor any automatic detection of a correct size and 
test utilities.

i was asking why the kernel module is completly locking up if 
a MTU size problem is present.

best regards, Michael