Discovered a little gotcha with Shaw and their Motorola Cable Modems.
Shaw gives you two IP addresses per account. However, if you are using their Motorola Modems you will never get a second IP. No matter how hard you try (and how much you bang your head trying).
By default these modems will only give you one IP address. You need to call Shaw support and they will change the setting in the modem to get a second IP.
Hope that saves somebody else some frustration.