ION-DTN
Delay-Tolerant Networking suitable for spacecraft and ground
...) software distribution implements Delay-Tolerant Networking (DTN) architecture, as described in Internet RFC 4838. It is intended to be usable in embedded environments, including spacecraft flight computers and ground systems.
ION 4.x builds BPv7 (RFC 9171) by default, with a configure option for BPv6 (RFC 5050). Windows installers for both BPv6 and BPv7 are provided.