EIGRP internal packet next hop

[schmidtjoe]

Hello,

I am learning the EIGRP basics in GNS3 and have added loopback interfaces and interfaces gi0/0 into the EIGRP AS. During establishing adjacency, I notice that the EIGRP update packet sent by R2 has a

next-hop ip 0.0.0.0. 

Can someone explain why the

next-hop ip

is not set to the interface IP 10.10.10.2? 

The topology and update packet as follows:

[MHM Cisco World]

I totally forget the no

ip next-hop-self,  

thanks @Peter Paluch  for his comment. 

so I check the DMVPN with no

ip next-hop-self 

(as seen above) and @Peter Paluch  totally right the

next-hop 

is change. 

now still the redistribute from one protocol to EIGRP this need another lab. 
Thanks 

[MHM Cisco World]

I try no

 ip next-hop self 

in EIGRP (not DMVPN) it not work, I need more lab to see the effect of this command in EIGRP (redistribute). 

[schmidtjoe]

@Peter Paluch @MHM Cisco World @David Ruess Thanks all for a deep dive of this topic.