Problem with the interface Tunnel UP/DOWN in GRE DMVPN.

[elmoutaallikbillahtaha]

Hi Everyone

I have a DMVPN Topology, and while configuring the GRE tunnel interface, I have this 

errors appears 

%ADJ-5-PARENT: Midchain parent maintenance for IP midchain out of Tunnel0, addr 16.16.16.1 - looped chain attempting to stack

and the tunnel interface is going UP/Down

 %DUAL-5-NBRCHANGE: EIGRP-IPv4 11: Neighbor 16.16.16.1 (Tunnel0) is down: Interface PEER-TERMINATION received

 %DUAL-5-NBRCHANGE: EIGRP-IPv4 11: Neighbor 16.16.16.1 (Tunnel0) is up: new adjacency

Do you have any idea why the interface Tunnel is going Down every time?

Thanks.

[Georg Pauwen]

Hello,

have a look at this document, which I think explains the issue pretty well:

http://www.cisco.com/c/en/us/support/docs/ip/enhanced-interior-gateway-routing-protocol-eigrp/22327-gre-flap.html

[elmoutaallikbillahtaha]

Hey

Thank you for your answers and your help.