Static default route over unnumbered PPP interface is stuck in dormant state. Manually installing this route in kernel with 'ip route' does not give any issues. bird> show static 0.0.0.0/0 via 10.210.137.96 (dormant) bird> show route Table master4: 10.210.137.97/32 unicast [direct1 10:55:13.947] * (255) dev lo 10.210.137.96/32 unicast [direct1 10:55:19.252] * (255) dev p1-1-1-1-2 10.0.0.0/20 unicast [direct1 10:54:37.104] * (255) dev eth0 # ifconfig p1-1-1-1-2 p1-1-1-1-2 Link encap:Point-to-Point Protocol inet addr:10.210.137.97 P-t-P:10.210.137.96 Mask:255.255.255.255 UP POINTOPOINT RUNNING NOARP MULTICAST MTU:1492 Metric:1 RX packets:1178 errors:0 dropped:2 overruns:0 frame:0 TX packets:782 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:3 RX bytes:62113 (60.6 KiB) TX bytes:57060 (55.7 KiB)