[DaniloDias]

Is there an application for containers? E.g. a way to set up an encrypted tunneling interface between containers that would allow you to avoid using TLS between the containers?

[eliaspro]

There isn't really a need for a separate application to do this. Just create a WireGuard interface and move it to the container's namespace.

[nielsole]

There is a wireguard network plugin for kubernetes

[terrywang]

Gravitational has built something called wormhole (clashes with magic wormhole, bad naming, isn't? Some other hold can be better) https://github.com/gravitational/wormhole

It can be used to replace flannel if encryption in transit is required.

[AirborneUnicorn]

Could you provide a link?