Windows Azure: ACLs apply to ALL traffic on the local port
Its not very clear fromt he documentation that adding an ACL also affects internal virtual network communications as well as external endpoint access on the port defined.
For Example: If you have two machines in different services connected via the same virtual network and are using the internal subnet IP for communication, the ACL will be applied to the traffic on the internal IP aswell as the external IP/Endpoint you apply it to, even if your not accessing the port via the external IP/endpoint.
Deploying a IPv6 Internet Enabled Network Part 1
This is the first in a two part series of blog posts that will deal with the configuration and deployment of an IPv6 internet enabled network without the need of an ISP which supports IPv6.
What you will need A spare physical or virtual server that can be used as a Linux based router In this case I was using a virtual machine on XenCenter with 256mb ram This can be done with just a desktop however if you are looking to configure a single node for IPv6 internet connectivity I would recommend setting up an account and following the documentation from a tunnel broker such as Hurricane Electric (http://tunnelbroker.