4 ms·

That all sounds about right to me. What's the confusion?

• zamadatix 3y ago
  That's not a dynamic solution, the information is all static and local without any active MTU probing. Nothing about the other two probing methods changes the above steps in the one-way scenario, so why do you say they wouldn't work with one-way routes?
  • sgtnoodle 3y ago
    So the confusion is around the intended definition of the word "dynamic"? Sure, you can't rely on any feedback in a one way route situation. My point is that IP fragmentation, as a method, gets packets through a network that would otherwise be truncated or dropped by other methods. It can also do it reasonably efficiently and conveniently, moreso than always assuming a worst case MTU at the application protocol layer. I think what changes between methods is the use of fragmented packets to begin with? The whole premise is that IP fragmentation is bad because real world routers and firewalls don't support fragmentation properly. If fragmentation is deprecated, then wouldn't network stacks need to also start dropping oversized packets coming from user space applications?