Re-added without vendor tag.

README

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+lwIP is a small independent implementation of the TCP/IP protocol
+suite that has been developed by Adam Dunkels at the Computer and
+Networks Architectures (CNA) lab at the Swedish Institute of Computer
+Science (SICS).
+
+The focus of the lwIP TCP/IP implementation is to reduce the RAM usage
+while still having a full scale TCP. This making lwIP suitable for use
+in embedded systems with tenths of kilobytes of free RAM and room for
+around 40 kilobytes of code ROM.
+
+lwIP features:
+ * IP (Internet Protocol) including packet forwarding over multiple
+   network interfaces
+ * ICMP (Internet Control Message Protocol) for network maintenance
+   and debugging
+ * UDP (User Datagram Protocol) including experimental UDP-lite
+   extensions
+ * TCP (Transmission Control Protocol) with congestion control, RTT
+   estimation and fast recovery/fast retransmit
+ * Specialized API for enhanced performance
+ * Optional Berkeley socket API
+
+lwIP is freely available under a BSD license.
+
+lwIP has grown into an excellent TCP/IP stack for embedded devices,
+and developers using the stack often submit bug fixes, improvements,
+and additions to the stack to further increase its usefulness.
+
+Development of lwIP is hosted on Savannah, a central point for
+software development, maintenance and distribution. A core team
+will improve lwIP by the use of Savannah's interface and CVS.
+
+The current lwIP CVS tree can be checked out by doing:
+  cvs -d:pserver:anoncvs@subversions.gnu.org:/cvsroot/lwip login
+  cvs -z3 -d:pserver:anoncvs@subversions.gnu.org:/cvsroot/lwip co lwip
+
+Last night's CVS tar ball can be downloaded from:
+  http://savannah.gnu.org/cvs.backups/lwip.tar.gz
+
+Submit patches and bugs via the lwIP project page:
+  http://savannah.nongnu.org/projects/lwip/
+
+Stable releases have not been released yet. For development we
+suggest downloading the latest CVS and keeping track of the
+lwIP mailing list.
+
+The mailing list (and archives), as well as Adam Dunkels' papers
+on lwIP can be found on the official lwIP home page, which is
+  http://www.sics.se/~adam/lwip/
+
+Reading Adam Dunkels' papers and browsing the mailing list archives
+is a good way to become familiar with the design of lwIP.
+
+Adam Dunkels <adam@sics.se>
+Leon Woestenberg <leon.woestenberg@gmx.net>		    
+