In a DMVPN lab I have one Hub router and two Spokes. The DMVPN is working properly. Routing works, spokes see each other, tunnel protection works. The problem I'm facing is the following.
Besides the DMVPN, the hub router and spoke1 have a direct serial link. Now, when spoke1 tries to connect to spoke2, it goes through that direct serial link through the hub.
Tracing this, it looks like even the tunnel has "ip no next-hop-self eigrp x" on the hub, it is advertising to spoke1 its own metric instead of the AD the hub gets from spoke2.
What would be the best to avoid this, and make the hub advertise the AD from spoke2 to spoke1?