libnetmon will attempt to connect to the monitor before giving up.
It used to try once and give up (still the default behavior).  Set this
to N to try N times one second apart or 0 to try forever.

If you start your app automatically from the ns/template, then you can
set a value in the ns file with either:
	set opt(LIBNETMON_CONNECTTIMO) 10
for the "old school" ns file, or:
	$ns define-template-parameter LIBNETMON_CONNECTTIMO 10
in a template.  Note that this will only work if you fire your app via
the program agent, otherwise you won't get the environment variable.