Webserver does not work with SSPEC_NO_STATIC macro


I’m using a RCM4300 with a webserver running on it.
Now I whant to add a FTP Server to my projekt.

In the TCP/IP Manual it is said that the macro SSPEC_NO_STATIC Needs to be defined.

But doing so, my webserver is not working anymore.

So how is it possible to use both, webserver and ftp Server?