Hi,
Yes also the disk on the client side is “fast” (tested on different clients as well) and since I tested the workaround (wormhole) on the same client and got good speed I am pretty sure it is not a client limitation.
Wormhole is a software that (somewhat simplified) creates a “p2p tunnel” (much like webrtc) between two computers to eg send files. wormhole is not aware of that it runs in docker or use any docker specific “tricks”, I only used it to see if I could avoid the download limitation by scp.
We will do some test in the coming days and see if what tcpdump can show. However, unless there is some other way to share a port in docker swarm network (with no direct access to the swarm workers for clients) than to route it over the ingress network, we need to use a mesh network.