UDPS-730 — Server addres of an any-port or any-sock session will be fixed
It is possible to specify that the first datagram received from the server during a session can arrive from any port but only from the IP address of the server (any-port), or even from any IP and port (any-sock). The source address of the first datagram the identifies the server's IP and port used till the end of the session. This is called "fixing" the server socket. This message informs about the fixed address of the server.