ranet3

What is ranet3?

ranet3 is a high-performance software-defined wide area network (SD-WAN) and IPsec mesh VPN solution. It operates in userspace to deliver encrypted transport using ESP over UDP, combined with IKEv2 handshakes and hybrid ML-KEM key exchange. The tool includes an embedded Babel routing speaker that continuously measures link round-trip times and adjusts paths accordingly. It also supports SRv6 steering to route traffic based on source and destination prefixes.

Unlike proprietary mesh VPN agents, ranet3 relies on standard networking protocols. This allows it to interoperate with existing infrastructure like strongSwan, BIRD, and Linux kernel segment routing modules. It can run alongside other SD-WAN or mesh tools on the same host. The userspace architecture enables advanced segment routing on operating systems like macOS that lack native kernel support for these headers.

Independent benchmarks indicate that ranet3 achieves near line-rate throughput on 10 GbE connections while maintaining lower CPU usage than competing kernel and userspace dataplanes. It prioritizes speed by automatically switching to relay nodes when direct links experience higher latency or packet loss, ensuring optimal traffic flow across complex network topologies.

ranet3 features

• Userspace ESP encryption in tunnel mode over UDP
• IKEv2 handshake with hybrid ML-KEM key exchange
• Embedded Babel speaker for dynamic RTT-based routing
• SRv6 steering by source and destination prefix
• Standard protocol interoperability with strongSwan and BIRD
• Automatic path switching to faster relay nodes
• Cross-platform segment routing without kernel dependencies

Who uses ranet3 and for what

• Connect distributed office locations with optimized WAN routing
• Deploy secure mesh networks that coexist with existing VPN agents
• Route traffic through specific waypoints on macOS without kernel modifications
• Replace proprietary SD-WAN solutions with standard protocol-based alternatives
• Monitor and adjust network paths in real time based on latency measurements

ranet3 FAQ

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