You may see hold time violations to this node in the Quartus® II software if you are using an IP product in OpenCore Plus evaluation mode. This hold time violation does note occur if you are using the IP with a valid license. This hold time violation does not affect device operation.
You can safely ignore this hold time violation as this violation.
If you would like to avoid this violation, set a false path to this node with the following constraint in your Synopsys Design Constraint (.sdc) file
set_false_path -to [get_registers *|pzdyqx_impl:pzdyqx_impl_inst|FNUJ6967]
This issue is fixed beginning with the Quartus II software version 12.1.