Symptom
-When configuring DMVPN Phase 3, if a NHO route is installed in the RIB, it should be removed via NHRP route-watch if the parent route is learned out an interface other than the tunnel where the NHO destination is reachable
-Currently, this behavior does not occur properly
-If an NHO is installed and the route changes, route-watch detects the route change, the new route is installed out the second, non-tunnel interface, but the NHO is retained in the RIB
Conditions
-DMVPN Phase 3 configuration
-Build spoke to spoke tunnels using NHO rather than H routes
-Learn the same prefix out a different interface, such as a physical interface or different tunnel interface
Workaround
-Summarize spoke networks on Hub so H routes are utilized rather than NHO
-Manually clear NHO ("clear ip nhrp shortcut") when the routes change
