The BIRD project aims to develop a fully functional dynamic IP routing daemon
primarily targetted on (but not limited to) UNIX-like systems and distributed
under the GNU General Public License.

+ The bird package is for IPv4, bird6 for IPv6
+ Multiple routing tables
+ BGP
+ RIP
+ OSPF
+ Static routes
+ Inter-table protocol
+ Command-line interface
+ Soft reconfiguration
+ Powerful language for route filtering

Homepage:
https://bird.network.cz/
