If you think you have found a bug, please send a bug report to http://bugzilla.quagga.net. When you send a bug report, please be careful about the points below.
ifconfig -a. Information from zebra's VTY command
show ip routewill also be helpful.
Bug reports are very important for us to improve the quality of Quagga. Quagga is still in the development stage, but please don't hesitate to send a bug report to http://bugzilla.quagga.net.