I installed FRR on debian 9 on 4 VM. 
I have 4 node FRR. 
All of them have eigrp configuration.
When I start ping test to 2 hop away FRR Router. 
Ping test successful.
But when I shutdown the interface of 2 hop away FRR Router.
Ping packets drop down.
With no shut comand in destination interface.
Ping successful again. 
But sometimes eigrpd daemon kill itself on FRR and I can not pinging again. 
I have to restart frr service on VM. 
But normally it should not work like that. 
Why this happen it in this scenario.
I have to deliver packets to destination continuously.
Please help!