client-connect and client-disconnect scripts

[vieri]

Hi,

I'm using client-{,dis}connect scripts on a server to log client connection data. Basically, client-connect logs the time when a client brings the tunnel up with several env variables. On the other hand, client-disconnect mostly logs the time and the bytes sent and received. How can I "link" the two logs together? Is there a unique tunnel session ID I can log?