DMVPN Phase 2 EIGRP Routing

  1. Why don’t You configure Spoke1 and Spoke2 simalar to Hub the with the command:
    **ip nhrp map multicast dynamic**

Is it possible to configure Spoke1 and Spoke2 so they can ask Hub:
“Hi NHRP server, I need to send multicast so give me public addresses for all routers”?’

If it is not possible - are there any important consequence that Spokes cannot exchange multicast?

  1. How does the command “ip next-hop-self eigrp” exactly work? Does it work:
    a) only for routes learnt AND sent via tunnel interface?
    b) for routes learnt via tunnel interface AND sent via ANY interface?
    c) for each route sent via tunnel interface