Hello Peter,
We have three sites hosted on the same server with the same IP address. For SEO (to avoid duplicate content) reasons we need to redirect the IP address to the site - but there are three different sites. If we use the "rel canonical" code on the websites, these codes will be duplicates too, as the websites are mirrored versions of the sites with IP address, e.g. www.domainname.com/product-page and 23.34.45.99/product-page. What's the best ways to solve these duplicate content issues in this case? Many thanks!