[c-nsp] rpf failure

[Jay Young]

Does anyone have any pointers on how  a 7609 RSP720 running
122-33.SRB2 builds the rpf table.

rtr3#sh ip rpf x.y.x.19
 failed, no route exists
rtr3#sh ip route x.y.z.19
Routing entry for x.y.z.16/28
  Known via "ospf xxx", distance 110, metric 13, type intra area
  Last update from a.b.c.194 on TenGigabitEthernet1/1, 1d02h ago
  Routing Descriptor Blocks:
  * a.b.c.194, from a.b.c.3, 1d02h ago, via TenGigabitEthernet1/1
      Route metric is 13, traffic share count is 1


I would think the unicast ospf route would be used, and is for some
routes but not this one.

Thanks,
Jay