I like to visualize networks as a series of tubes in my head. Maybe I'm misunderstanding something but I'm imagining a kernel driver that acts as a separate net

I like to visualize networks as a series of tubes in my head. Maybe I'm misunderstanding something but I'm imagining a kernel driver that acts as a separate network interface proxying to localhost as a klein bottle[0] esque object [0]: https://en.wikipedia.org/wiki/Klein_bottle https://en.wikipedia.org/wiki/Klein_bottle