## This should ProxyPass for example
## http://example.org/trac/something -> http://example.org/trac/something
## where 'something' should be anything entered by the user...

<ProxyMatch /trac/(.*)>
        ProxyPass http://10.200.2.2/trac/$1
         ProxyPassReverse http://10.200.2.2/trac/$1
</ProxyMatch>