Hello,
I've put aside multiple receives of UNREACHABLE notifications, and done some network packets captures, and actually found my mistake : I had downsized too much the 'rto_max' parameter, for quickier detection of unavailable peers on a fast network, but here its value was like the mean roundtrip time between hosts (given by the 'ping'), and from time to time, this retransmission timeout was exceeded ! Using a larger value for this parameter solved my problem :-)
What could be a good rto_max value calculation from the mean RTT value between hosts ?
Thanks for your help,
Fred.
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