* If XAPI is configured for a manager, configures the OVS
manager to match with "ovs-vsctl set-manager".
-The Open vSwitch boot sequence only configures an OVS configuration
+Notes
+-----
+
+* The Open vSwitch boot sequence only configures an OVS configuration
database manager. There is no way to directly configure an OpenFlow
controller on XenServer and, as a consequence of the step above that
deletes all of the bridges at boot time, controller configuration only
can, however, configure controllers for bridges. See the BUGS section
of ovs-controller(8) for more information on this topic.
+* The Open vSwitch startup script automatically adds a firewall rule
+to allow GRE traffic. This rule is needed for the XenServer feature
+called "Cross-Host Internal Networks" (CHIN) that uses GRE. If a user
+configures tunnels other than GRE (ex: VXLAN, LISP), they will have
+to either manually add a iptables firewall rule to allow the tunnel traffic
+or add it through a startup script (Please refer to the "enable-protocol"
+command in the ovs-ctl(8) manpage).
+
Reporting Bugs
--------------