proxying to a different context

e.g.

 config

root@ve10(Active)(tmos) list ltm virtual bar
ltm virtual bar {
    destination 172.28.24.9:http
    ip-protocol tcp
    mask 255.255.255.255
    pool foo
    profiles {
        http { }
        tcp { }
    }
    rules {
        qux
    }
    snat automap
}
root@ve10(Active)(tmos) list ltm pool foo
ltm pool foo {
    members {
        200.200.200.101:http { }
    }
}
root@ve10(Active)(tmos) list ltm rule qux
ltm rule qux {
    when HTTP_REQUEST {
  if { [HTTP::uri] starts_with "/security/" } {
    HTTP::uri [string map {/security/ /newsecurity/} [HTTP::uri]]
  }
}
}

 trace

[root@ve10:Active] config  ssldump -Aed -nni 0.0 port 80
New TCP connection 1: 172.28.24.11(40932) <-> 172.28.24.9(80)
1392122867.4110 (0.0020)  C>S
---------------------------------------------------------------
GET /security/something HTTP/1.1
User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 OpenSSL/1.0.1e zlib/1.2.3 libidn/0.6.5
Host: 172.28.24.9
Accept: */*

---------------------------------------------------------------

New TCP connection 2: 200.200.200.15(40932) <-> 200.200.200.101(80)
1392122867.4148 (0.0021)  C>S
---------------------------------------------------------------
GET /newsecurity/something HTTP/1.1
User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 OpenSSL/1.0.1e zlib/1.2.3 libidn/0.6.5
Host: 172.28.24.9
Accept: */*

---------------------------------------------------------------