iRule Redirect for the same URL?

Hello All,

 

I am struggling to implement an iRule condition for the same URL where I can't use any redirects like 301, 302, 307, etc. because of infinite loop.

 

Here is the example.

 

Source URL:

 

Destination URL:

 

so basically I want to add /not/working/ part before hitting the backend servers. I tried few techniques but no results yet.

 

Thanks as always, R