FAQ.md

@@ -24,6 +24,7 @@ We are slowly migrating the old FAQ to the new wiki ...
   1. [Can I reload the disk on my nodes?](faq/Using the Testbed/Can I reload my nodes)
   1. [Are my nodes (my data) backed up?](faq/Using the Testbed/Are my nodes backed up)
   1. [What does *too many links* mean?](faq/Using the Testbed/Too many links)
+  1. [What is the *control network*?](faq/Using the Testbed/Control Network)
 
 ## How do I ...