Hi Guus, I am wondering why MACExpire was introduced in: ,---- | commit 14979f835df4214a7c2510852f7ffedc9e08c2c0 | Author: Guus Sliepen <guus at tinc-vpn.org> | Date: Fri Mar 1 14:09:31 2002 +0000 | | - Global time_t now, so that we don't have to call time() too often. | - MAC addresses expire after a time configurable by MACExpire (default 600 | seconds) `---- Is there a security motivation involved? Would it be possible to disable it completely? I am running babel routing protocol with tinc with options Forwarding=off, DirectOnly=yes and Broadcast=direct. In this configuration, tinc only takes care of the tunnel mesh, leaving forwarding completely to babeld and kernel. I find the connections getting interrupted whenever the MAC address of the tinc interface changes. I have to set MACExpire=31536000 to tinc.conf mitigate this. Yours, Benda