fix links

Author: asudbring

articles/virtual-network/ip-services/create-vm-dual-stack-ipv6-portal.md

@@ -23,7 +23,7 @@ In this article, you'll create a virtual machine in Azure with the Azure portal.
 
 In this section, you'll create a dual-stack virtual network for the virtual machine.
 
-1. Sign-in to the [Azure portal](https://https://portal.azure.com).
+1. Sign-in to the [Azure portal](https://portal.azure.com).
 
 2. In the search box at the top of the portal, enter **Virtual network**. Select **Virtual networks** in the search results.
 

includes/virtual-network-multiple-ip-addresses-os-config.md

@@ -180,7 +180,7 @@ Ubuntu 18.04 and above have changed to `netplan` for OS network management. We r
     :wq
     ```
 
-6. Test the changes using [netplan try](http://manpages.ubuntu.com/manpages/cosmic/man8/netplan-try.8.html) to confirm syntax:
+6. Test the changes using [netplan try](https://manpages.ubuntu.com/manpages/kinetic/en/man8/netplan-try.8.html) to confirm syntax:
 
     ```bash
     netplan try