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It will probably have its own satellite network that serves as the Mars internet, with a high-latency intermittent bridge to the Earth internet.

Where high-latency is a ping of somewhere between 364,000ms and 2,684,000ms depending on the date.

Tcp seems like a really bad protocol for this.

There already is a bunch of RFCs in place for high latency protocols.

Famously RFC1149: https://tools.ietf.org/html/rfc1149 . I suspect that wouldn’t fly in an interplanetary scenario though.

I think https://tools.ietf.org/html/rfc1217 might be more appropriate, and even touches on the relevant topic in section 5(e).

on Mars a NAS is must have.