Investigate LOAD_FLAGS_BYPASS_PROXY usage
LOAD_FLAGS_BYPASS_PROXY usage in his proxy
so we should look at it closer.
I think this is just a way to indicate that proxy caches should be bypassed and does not mean that suddenly connections bypass the network proxy settings, see the MDN explanation of that flag:
This flag specifies that any intermediate proxy caches should be bypassed (That is, that the content should be loaded from the origin server).
We'll see whether my basic understanding is right here...