EtherSia

A minimal IPv6 library for an Arduino with an ENC28J60, W5500 or W5100 Ethernet controller.

Features

• SLAAC (Neighbour Discovery Protocol / Stateless Auto-configuration)
• HTTP Server
• UDP Client and Server
• DNS Client

Design Decisions

1. Optimised for Arduino - not a general purpose library
2. Should be easy to use - this is what Arduino is all about
3. Should work within the constraints of an Uno - 32k ROM and 2k RAM
4. Should follow the Style Guide and avoid using complex C features like Pointers and Callbacks
5. Decouple the core from protocols where possible, to allow for program size optimisations
6. Only use statically allocated memory to avoid leaks and keep memory usage down

Limitations

• Ethernet only
• No DHCPv6
• No Routing or RPL
• No TCP Client
• Stateless TCP in HTTP Server (single packet request/response)
• No fragmentation support
• A single local router on the network is assumed
• The network prefix length is assumed to be /64

If you need a more fully functional IPv6 stack, then take a look at Contiki.

EtherSia is an IPv6 only library. If you are looking for an IPv4 library for ENC28J60, then take a look at EtherCard.

Compatibility

EtherSia should work on any Arduino board with ENC28J60, W5500 or W5100 based network interface. There are the results of boards I have tested with:

License: 3-clause BSD license