in WPMU install, I have been able to successfully setup an existing blog with its own domain name (i.e. turning joe.mywpmu.com into myblog.joe.com). I did this using the basic methods (ie setup a new site with the target domain, move Joes blog to that site, etc) discussed in http://mu.wordpress.org/forums/topic.php?id=2076
my question is:
what happens if I want to add ever more domains to that same blog (ie have myblog.jane.com point to the same blog)? since we can only have a single domain per site, and a blog can only belong to a single site, a blog can only be referenced by a single domain. I am not sure how to proceed without hacking the core code
the question began when someone asked me to find out what happens if I need tp assign a domain to a blog but ALSO retain the original blog URL (ie have both joe.mywpmu.com and myblog.joe.com available. the conversation then went on to having multiple domains for a single blog.
any help/ideas welcome and appreciated.