[half key-lifetime, or key-lifetime minus 5 mins (mobile: 12 hours),
whichever is longer].
keepalive (bool): if True then attempt always to keep a valid session key.
- Not actually currently implemented. [false]
+ [false]
log-events (string list): types of events to log for this site
unexpected: unexpected key setup packets (may be late retransmissions)
setup-init: start of attempt to setup a session key