LTM HTTP explicit forward proxy and route domains

Hi I just ran into this, but I didn't have anything configured in route domain 0. The result was I was getting instant 503's.

I figure I would post a reply because I found this via google, so other people might as well :).

What I found confusing is that regular http traffic worked just fine, it was only Proxy CONNECT that was failing. After bashing my head against a wall for a few hours, I finally notices that within the explicitly proxy profile their is a field for route domain which defaults to 0. AS you can guess the second I changed it all was good.