Mine

2006/07/06 11:39:15 OSPF: ospf_process_stubs(): after examining links:
Router vertex 1.2.3.4  distance 0 backlink -1 flags 0
2006/07/06 11:39:15 OSPF: ospf_spf_calculate: Stop
OSPF: Received signal 11 at 1152182355 (si_addr 0x0); aborting...
Backtrace for 18 stack frames:
/usr/lib/quagga/libzebra.so.0(zlog_backtrace_sigsafe+0x30)[0xe3a580]
/usr/lib/quagga/libzebra.so.0(zlog_signal+0x1f4)[0xe3a434]
/usr/lib/quagga/libzebra.so.0[0xe479ef]
/lib/tls/libc.so.6[0x1fbec0]
/usr/lib/quagga/libzebra.so.0(thread_call+0x6f)[0xe2f5ff]
/usr/lib/quagga/libzebra.so.0(funcname_thread_execute+0x6c)[0xe2f6cc]
/usr/lib/quagga/libospf.so.0(ospf_if_cleanup+0xbf)[0x76e4ef]
/usr/lib/quagga/libospf.so.0(ism_interface_down+0x1f)[0x77080f]
/usr/lib/quagga/libospf.so.0(ospf_ism_event+0x36)[0x770ae6]
/usr/lib/quagga/libzebra.so.0(thread_call+0x6f)[0xe2f5ff]
/usr/lib/quagga/libzebra.so.0(funcname_thread_execute+0x6c)[0xe2f6cc]
/usr/lib/quagga/libospf.so.0(ospf_vl_shutdown+0x66)[0x76f5b6]
/usr/lib/quagga/libospf.so.0(ospf_vl_shut_unapproved+0x48)[0x76fb08]
/usr/lib/quagga/libospf.so.0(ospf_spf_calculate_timer+0x87)[0x784a77]
/usr/lib/quagga/libzebra.so.0(thread_call+0x6f)[0xe2f5ff]
/usr/sbin/ospfd(main+0x371)[0x8049671]
/lib/tls/libc.so.6(__libc_start_main+0xed)[0x1e979d]
/usr/sbin/ospfd(geteuid+0x39)[0x80491a1]