Hello,
Apologies for the late response.
Indeed, if you manually configure NHRP, there might not be a DMVPN interface available. However, if you have configured DMVPN according to our configuration example here, then there should be an NHRP instance with a DMVPN interface:
In your case, it seems that IPSec is established successfully and you are able to communicate with the HUB. However, I can see that NHRP redirection, which is needed for DMVPN Phase 3, is not enabled. Could you please try enabling it in DMVPN settings?
You can also find other DMVPN configuration examples here and here (the last is for legacy, but at the end of the article there is a configuration example for a Cisco device). I would recommend trying to configure your device according to these examples to see if it resolves the issue.
Please note that eth1 is not a LAN interface but a wired WAN interface. The eth0 interface represents your LAN ports, br-lan is a combination of eth0 + wireless LAN, eth1 is your wired WAN port, and wwan0 is your mobile WAN. Virtual interfaces in Network -> Interfaces are typically bound to these physical interfaces. If you are using DMVPN on your wired WAN, please try capturing traffic on both eth1 and dmvpn interfaces to see if there is any relevant traffic.
Another detail that I think is worth mentioning, is that currently, BGP is the only dynamic routing protocol that works with DMVPN properly due to the way that some internal services on the devices work. But the support for other dynamic protocols with DMVPN should be added in the future.
If the issue persists, it would be helpful if you could provide additional information such as topology, tcpdump (pcap) and a troubleshoot file. Before downloading a troubleshoot file from System -> Administration -> Troubleshoot, ensure that you have replicated the issue and allowed the router some time to attempt to establish the connection. You can attach these files by editing your question. The attached files are only visible to Teltonika moderators.
Kind Regards,
Andzej