Added redirects

Author: Michael Bender

.openpublishing.redirection.json

@@ -4969,7 +4969,17 @@
             "source_path_from_root": "/articles/virtual-network/ip-services/routing-preference-cli.md",
             "redirect_url": "/azure/virtual-network/ip-services/routing-preference-portal",
             "redirect_document_id": false
-        }
+        },
+        {
+            "source_path": "azure/virtual-network/ip-services/create-custom-ip-address-prefix-ipv6-powershell.md",
+            "redirect_url": "azure/virtual-network/ip-services/create-custom-ip-address-prefix-ipv6--portal.md",
+            "redirect_document_id": false
+        },
+        {
+            "source_path": "azure/virtual-network/ip-services/create-custom-ip-address-prefix-ipv6-cli.md",
+            "redirect_url": "azure/virtual-network/ip-services/create-custom-ip-address-prefix-ipv6--portal.md",
+            "redirect_document_id": false
+        }  
 
     ]
 }