[c-nsp] DMVPN and OSPF

[Jay Nakamura]

Has anyone seen this symptom?

1841, advanced IP feature set
DMVPN spoke and OSPF over the DMVPN

Running 12.4(24)T

Periodically, the router looses all it's OSPF routes and stays that
way.  Clearing the DMVPN or OSPF process does nothing.  It recreates
the OSPF session with neighbor but it still has no routes.  It can't
seem to re-connect to the backup DMVPN hub either.

Router still routes to the static default route for internet traffic
and everything else seems normal.  Just can't get to the VPN network.

It's really not doing anything fancy other than DMVPN and OSPF.