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I have this TP-LINK TL-R402M router. When I go to the router admin management page and visit the System Tools -> Log section, I see this at the bottom of the log:

Free=988, Busy=36, Bind=34, Inv=0/11, Bc=0/0, Dns=0, cl=48, fc=0/0, sq=3/11

What do those Free, Busy, Bind, etc mean?
Are there any reference manuals for this?

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