fixed redirect errors and removed TOC references to old docs

Author: Michael Bender

.openpublishing.redirection.json

@@ -4843,13 +4843,13 @@
             "redirect_document_id": false
         },
         {
-            "source_path": "azure/virtual-network/ip-services/add-dual-stack-ipv6-vm-powershell.md",
-            "redirect_url": "azure/virtual-network/ip-services/add-dual-stack-ipv6-vm-portal",
+            "source_path": "/articles/virtual-network/ip-services/add-dual-stack-ipv6-vm-powershell.md",
+            "redirect_url": "/azure/virtual-network/ip-services/add-dual-stack-ipv6-vm-portal",
             "redirect_document_id": false
         },
         {
-            "source_path": "azure/virtual-network/ip-services/add-dual-stack-ipv6-vm-cli.md",
-            "redirect_url": "azure/virtual-network/ip-services/add-dual-stack-ipv6-vm-portal.md",
+            "source_path": "/articles/virtual-network/ip-services/add-dual-stack-ipv6-vm-cli.md",
+            "redirect_url": "/azure/virtual-network/ip-services/add-dual-stack-ipv6-vm-portal.md",
             "redirect_document_id": false
         }
 

articles/virtual-network/ip-services/toc.yml

@@ -125,13 +125,7 @@ items:
       - name: Upgrade a basic public IP address on a VM
         href: public-ip-upgrade-vm.md
       - name: Add dual-stack network to an existing VM
-        items:
-        - name: Portal
-          href: add-dual-stack-ipv6-vm-portal.md
-        - name: PowerShell
-          href: add-dual-stack-ipv6-vm-powershell.md
-        - name: CLI
-          href: add-dual-stack-ipv6-vm-cli.md
+        href: add-dual-stack-ipv6-vm-portal.md
       - name: Create VM - dual-stack network
         items:
         - name: Portal