Since this networking package is based on BSD code, it is very complete and robust. The eCos implementation includes support for the following protocols:
IPv4
UDP
TCP
ICMP
raw packet interface
Along with support for the above mentioned protocols, the OpenBSD stack also supports ethernet bridging.
The following additional features are also present in the package, but are not supported:
Berkeley Packet Filter
Multi-cast and uni-cast support, including multi-cast routing
IPv6