Vast progress. Now all type of overlay network traffic is multiplexed into 1024 bytes fixed size cells (configurable size, even in run-time). Special care has been taken to send echo request/replies using this same mechanism but thealways trigger an immediate transmission of a fixed cell packet even though they are alone in the packet, i.e. a lot of padding, but this packets are not numerous. The tun devices has been fine tuned with a MTU to work in combination with the fixed packet cell size, i.e. ip packets arriving on the tun device will be small enough not exceed the fixed packet cell size. Had to patch the tunctl to set the MTU on the tu device. The log server has been fixed so the log filters works as it should. Next now is some more testing on traffic flows during reconfiguration of the overlay network due to the change in latency betwwen member nodes. Then NaCL/Salt encryption/decryption of the network (should not be that hard. Salt is very easy to use).