Default g_nof_10ppm=0 to simulate OK. When > 0 then simulation fails, perhaps...

Default g_nof_10ppm=0 to simulate OK. When > 0 then simulation fails, perhaps the IP simulation model can not cope with ppm offset?

libraries/technology/eth_10g/tb_tech_eth_10g_ppm.vhd

@@ -41,7 +41,7 @@ ENTITY tb_tech_eth_10g_ppm IS
   -- Test bench control parameters
   GENERIC (
     g_technology : NATURAL := c_tech_select_default;
-    g_nof_10ppm  : INTEGER := 1    -- use /= 0 to verify XO ppm offset between two devices
+    g_nof_10ppm  : INTEGER := 0    -- use /= 0 to verify XO ppm offset between two devices
   );
 END tb_tech_eth_10g_ppm;