The FNET is a free, open source, dual TCP/IPv4 and IPv6 Stack (under GNU LGPLv3 license with the linking exception) for building embedded communication software on 32bit MCUs.

The FNET v2.4.0 Stack provides following protocols and services:

• Supported platforms:
  • ARM Cortex-M4:
  • Kinetis - MK60N512 (TWR-K60N512).
  • ARM Cortex-M3:
  • NXP LPC 176x - (Link to the port).
  • ColdFire:
  • Reindeer - MCF5282 (M5282EVB).
  • Kirin2 - MCF52235 (M52235EVB).
  • Kirin3 - MCF52259 (M52259EVB, M52259DEMOKIT, TWR-MCF52259).
  • Lasko - MCF51CN128 (TWR-MCF51CN).
  • Qorivva Power Architecture:
  • Fado - MPC5668G (MPC5668GKIT).
• Supported Compilers:
• IAR:
• Embedded Workbench for ARM Version 6.5 (MK60N512).
• ARM:
• Keil uVision Version 4.6 (MK60N512).
• Freescale:
• CodeWarrior Development Studio for Microcontrollers Version 10.3 (MK60N512, MCF52259).
• CodeWarrior for ColdFire Version 7.2.2 (MCF5282, MCF52235, MCF52259).
• CodeWarrior for Microcontrollers Version 6.3 (MCF51CN128).
• CodeWarrior Development Studio for MPC55xx/MPC56xx Version 2.10 (MPC5668G).
• Bare-metal TCP/IP stack. No underlying RTOS is required, although it can be used with it.
• Non-blocking Socket layer API (STREAM, DGRAM, RAW).
• Core Protocols:
  • TCP (Transmission Control Protocol).
  • UDP (User Datagram Protocol).
  • IPv4.
  • ICMPv4 (Internet Control Message Protocol).
  • IGMP (Internet Group Management Protocol).
  • ARP (Address Resolution Protocol).
  • IPv6.
  • Passed the "IPv6 Ready Logo" Phase-2 IPv6 Core Protocols Conformance Tests, for host.
  • ICMPv6.
  • Neighbor Discovery.
  • Stateless Address Autoconfiguration.
  • Path MTU Discovery.
• Network Interfaces:
  • Ethernet.
  • Loopback.
• Services:
  • HTTP server:
    • HTTP/1.0 or 0.9 responses.
    • GET and POST requests.
    • CGI and SSI.
    • Basic access authentication.
  • TELNET server.
  • PING service.
  • DNS IPv4 client/resolver.
  • DHCP/BOOTP IPv4 client.
  • TFTP server and client. Both Read and Write requests are supported.
  • ROM File System.
  • On-chip Flash driver.
  • Command line shell.
  • Serial driver.
• Tools:
  • GUI File System Generation Tool.
  • GUI Throughput Benchmark Tool.
• Applications:
  • TFTP Bootloader.
  • Shell Application.
  • FBENCH Throughput Benchmark Application.
• User Documentation.