eXtensible Open Router Platform

 XORP is the eXtensible Open Router Platform. It implements a number of
 routing protocols for IPv4 and IPv6 and a unified means to configure them. It
 is stable and fully featured enough for production use, and flexible and
 extensible enough to enable network research.
 .
 The following network protocols are currently
 supported: BGP, OSPF, RIP/RIPng, IGMP/MLD and PIM-SM.