Babel is a distance-vector routing protocol for
IPv6 and IPv4. It is designed to be robust and work
efficiently on both wired networks and wireless
mesh networks.
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The resend logic has been made less aggressive, which should reduce the amount of routing traffic during network instabilities. A backward-incompatible change has been made: the -i flag no longer exists.
Major scalability improvements to the implementation (the protocol remains unchanged). Babeld should now handle networks with a few thousands of nodes with minimal CPU usage.