For some reason I am unable to access my HA instance with mobile data. I have DuckDNS and I can access it from other wifi (remotely).
While trying with a VPN (wireguard that’s setup with HA, it also doesn’t work).
Neither the App or Web versions open and I have no clue on what to do.
Help?
Hi, so you can access HA from a remote network with a desktop system and a browser, without using a VPN?
Here are the access scenarios:
LAN with IP - works
LAN with duckdns url - works
Remote wifi/network (but not 4G/cellular) with duckdns url (my girlfriends house, coffeeshop etc) - works
4G data with app accessed with duckdns url - Do not work
4G data with with web duckdns url - Do not work
VPN on - Do not work (VPN was setup with HA and not with a different server)
4G Hotspot on my computer - Do not work
Cellular carriers use CGNAT which is incompatible with dynamic dns services like DuckDNS.
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I’m really not familiar with this, but after reading somethings It seams that CGNAT causes problems because this might make many devices use the same IP, is that right? I tried changing my APN protocol to IPV6 only and this didn’t work either.
Also we discussed my case in a reddit thread and it looks like my carrier is actively blocking the usage of external DNS.
Any idea on how to make this work? It used to a couple of days/weeks ago (not really sure when it happened but not too long ago)
With CGNAT a provider puts multiple users behind 1 public IP.
It makes sense that DNS services cannot work since you and many other users are on the same IP.
I wonder if Tailscale can be an option…
Just installed Tailscale following this video and its working. I accessed it with my tailscale IP:8123, not with my local ip, but this can’t be a long term solution…
Well, I got this working using cloudflare following this tutorial and I bought a mydomain.loan from cloudflare directly (that was pretty cheap, USD 3.15 per year). Now I believe I have the best of all worlds!
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Good your problem got solved!
Please take the time to mark the answer as solution, you do that by selecting the three dots under the post:
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Don’t forget too while you’re down there to click the heart to like the post, as a way of saying thank you.
Unfortunately I cannot mark this as solved 
. There is no checkbox available in this thread.
You can’t mark solutions in uncategorized threads. Moved to configuration, mark whatever solution you want.
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