Critical Issue
The Nios II documentation should include the following information:
Versions of the NicheStack TCP/IP Stack other than the Nios II Edition include optional Trivial File Transfer Protocol (TFTP) client and server applications. However, the TFTP client and server are not thread safe. They cannot be used in systems with the MicroC/OS-II RTOS.
TFTP is not available with the NicheStack TCP/IP Stack - Nios II Edition. The TFTP client and server features are disabled.