Double NAT issue

[wvdkuil]

Meteohub program does not upload data when behind multiple NAT devices / routers.

I searched the forum for a topic about double Network Address Translation but did not find one.
In Belgium the internet provider Telenet supplies a cable modem router with only basic functionality. I added a Draytek 3120n vpn router accespoint and put a DMZ pointer to the Draytek in the Telenet modem/router. So external ip => telenet moden => 192.168.0.xyz => Draytek => 192.168.1.abc. All devices except Meteohub work fine and vpn is functioning.

But when connecting the Meteohub to the Draytek it refuses to upload to my website.
At "system info" ==> WAN IP the message in red "no internet access" appears where normally the real internet address appears.

Do I overlook something or is there no solution for this?
And does the Meteobridge device also refuses to work behing to NAT devices?

Any help would be welcome and when I missed a topic/discussion about this problem please point me in the right direction.

Wim van der Kuil

[birdfeedr]

There does not appear to be anything remarkable about meteohub running double NAT. My setup is running on a secondary router connected WAN to LAN with no problems. The only port forward I have on secondary router is port 80 for remote admin since my primary router contains most of my device connections.

I am running something in reverse from you. My primary router *is* primary. Your secondary router contains most or all of your device connections.

If telenet and draytek are in close proximity, then what happens if you connect meteohub to the telenet? This assumes telenet router has multiple LAN ports.