need help figuring out a proxy irule

 

The below post has a bunch of good information that I think has me in the right direction.

 

http://devcentral.f5.com/Community/GroupDetails/tabid/1082223/aff/5/aft/1172576/afv/topic/asg/50/Default.aspx

 

 

however, here's what I need to accomplish.

 

I have www.domain.com/somestring This is a vanity url that will proxy to new.domain.com/ However, I need to retain in the browser www.domain.com/somestring.

 

 

What I am unclear on is how it's possible to proxy traffic to a pool while having the domain name change.

 

 

The pool I'm sending it to has a webserver that hosts 3 blogs (new.domain.com) being one of them. They are all configured to be blog1.domain.com, blog2.domain.com and now mine... new.domain.com).

 

 

If I just do something like if { [HTTP::host] == "www.domain.com" and [HTTP::uri] == "/somestring" } { pool blogservers } there's no way for the webserver to know what virtual host to send the request to. Is there some way I can say set [HTTP::host] == "new.domain.com" and have the webserver understand it's the new domain, but not actually change the url?