This target can be used to identify when interfaces have been idle for a

certain period of time.  Timers are identified by labels and are created when

a rule is set with a new label.  The rules also take a timeout value (in

seconds) as an option.  If more than one rule uses the same timer label, the

timer will be restarted whenever any of the rules get a hit.  One entry for

each timer is created in sysfs.  This attribute contains the timer remaining

for the timer to expire.  The attributes are located under the xt_idletimer

class:

.PP

/sys/class/xt_idletimer/timers/<label>

.PP

When the timer expires, the target module sends a sysfs notification to the

userspace, which can then decide what to do (eg. disconnect to save power).

.TP

\fB\-\-timeout\fP \fIamount\fP

This is the time in seconds that will trigger the notification.

.TP

\fB\-\-label\fP \fIstring\fP

This is a unique identifier for the timer.  The maximum length for the

label string is 27 characters.