-In the end, our communication from *Host1@AS2* to *Host2@AS5-4* follows this path: ``{Link1, Link3, Link2}``
+In the end, our communication from *Host1@AS2* to *Host2@AS5-4* follows this path: ``{Link1, Link3, Link2}``
+
+It is possbile to use :ref:`pf_tag_bypassZoneRoute` to provide a path between two zones that are not necessarily sibilings.
+If such routes exist, SimGrid will try to match each of the ancestor zones of the source with each of the ancestor zone of
+the destination, looking for such a bypass to use intead of the common ancestor.