Hello experts,
As many of you are already aware, I just found that Docker/Hyper-V L2 forwarding(bridge/switch) cannot handle UDP over IP fragmentation because UDP has no inherent PMTU discovery unlike TCP.
When I try to run a container as DTLS client, it can’t receive Server Hello due to IP fragmentation.
As a tentative solution, I used Oracle VirtualBox (docker over VM over vNAT) because vNAT is a L3 router so as to handle IP fragmentation.
Can there be a solution to handle UDP/IP fragmentation on top of Hyer-V ?
Thanks for help.