- check that radiusnew succeeded before using r

been bytes received from the modem (dead sessions were having the
idle timeout reset by stray packets).

Fix off-by-one errors in session/tunnel initialisation and sessiont <-> sessionidt functions.
Use session[s].opened consistently when checking for in-use sessions (rather than session[s].tunnel).
Use <= cluster_highest_sessionid rather than < MAXSESSION in a couple of loops.

Use session[s].opened consistently when checking for in-use sessions (rather than session[s].tunnel).

Bump VERSION to 2.0.16.
Expose sessionkill().

more DoS prevention: add packet_limit option to apply a hard limit to downstream packets per session

use random_data() to set radius[].auth

replace some magic numbers with enum

throttle outgoing LASTSEEN packets to at most one per second for a given seq#

fix cli_print format strings