RP/0/RP0/CPU0:R2#show ospf trace all | include 192.0.2
Tue Sep 22 16:59:01.268 UTC
84   Sep 22 16:40:06.428  ospf_rib_route_header: Already have the ctlblk for this prefix 192.0.2.0 len 24 ctlblk distance is 256 new distance is 110
133  Sep 22 16:47:01.957  ospf_rib_route_header: Already have the ctlblk for this prefix 192.0.2.0 len 24 ctlblk distance is 256 new distance is 110
182  Sep 22 16:54:08.453  ospf_rib_route_header: Already have the ctlblk for this prefix 192.0.2.0 len 24 ctlblk distance is 256 new distance is 110
RP/0/RP0/CPU0:R2#show ospf trace errors
Tue Sep 22 16:59:21.104 UTC

Traces for OSPF 1 (Tue Sep 22 16:59:21)
Traces returned/requested/available:  4/8192/4
Trace buffer: errors

1    Sep 22 16:17:49.166  ospf_nsr_ev_free: Cannot free event 0xec83efc0: flags 0x0,work 0x5e3b78bb1540, handler 0x5e3b6eaf202e
2    Sep 22 16:17:49.166  ospf_nsr_ev_free:   inst 0x0, nsr_info 0x0, next 0x0
3    Sep 22 16:17:49.263  ospf_is_config_startup_done: Reading config startup done tuple failed [errno 0x40818600: 'sysdb' detected the 'warning' condition 'A SysDB client tried to access a nonexistent item or list an empty directory']
4    Sep 22 16:18:47.590  ospf_rcv_update_preprocess: Nbr 1.1.1.1 on Gi0/0/0/0 not up