Funny numbers being shown on Ubuntu system monitor, is China to blame?

I’ve noticed that gnome-system-moniter is reporting my upload and download incorrectly, I only have Nextcloud running on this box currently, nothing else is using the network. I’m using Nexcloud with Docker and MariaDB, and I think it’s because of something to do with Docker’s network interface. Any help or insight is appreciated, I would like to know if this is a bug or if everything is being uploaded to China.

Nexcloud version: 17.0.1
Docker version: 19.03.5
Ubuntu version: 18.04.3

Here’s a screenshot of gnome-system-moniter:

I suspect its because docker is a separate network interface but I would like for someone to reassure me, thank you.