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Unlike other operators, SpaceX Starlink is using strictly proprietary Layer2/3 protocols from space to the terminal. Only IPv6 SLAAC is somewhat standard, while IPv4 sports (also proprietary) horrendous carrier grade NAT.

El-cheapo LEO satellite constellation like Starlink has some interesting features though, like being deterministic like clockwork. One can build a pre-emptive L2 SDN instead of OLSR-que dynamic routing or switching.