@rockoutwithyourclockhvint interface connects guest OS to Hyper-V switch to communicate with host OS (Windows 10), data flows between hyper-v virtual machines (aka docker swarms) goes through Hyper-V switch.
I am also confused. In fact, I see even I disconnected the NIC card of the MobyLinuxVM from hyper-V, and then go into MobyLinuxVM, I can still ping external IP like “google.com” successfully. Seems like the packet send out from eth0. By I do not understand why.