Symptom
Netflow feature may throw traceback at fib_ext_client_nflow_get_next_hop
Conditions
Platform: 1-stage forwarding XR platforms (ncs5k, ncs5500, ncs4k)
Software: 6.1.4/6.2.2/6.3.1 only
Netflow configured on a specific BGP recursive next hop. This BGP prefix has to have multipath, and the paths are resolved via BGP (not IGP)
Workaround
No workaround. Netflow may not work well on collapsed recursive BGP multipath on Fretta