Note: this file is an early design document, but might be updated as the version goes up.
A Repeater node has exactly two external links, so that it is useful in a line only. It is essentially a repurposed QNIC, with both halves of the card running the same [Network Type](Network Type). It also contains a simple C4.
A repeater does not need to run a full Routing protocol, since it has simple decisions on what the next hop is.