GNU Zebra - http://www.zebra.org/
Manages TCP/IP based routing protocols. It supports BGP4 (RFC1771), RIPv1, RIPv2 and OSPFv2. Zebra makes use of OS threads where available. |
http://sites.inka.de/sites/bigred/devel/cipe.html - http://sites.inka.de/sites/bigred/devel/cipe.html
An ongoing project to build encrypting IP routers. Software is already available for Linux and released under GPL. |