Can't Access External IP from Internal Network

Installation Home Assistant OS
1

I have a new installation of Hass.io. I have set up Duck DNS and Let’s Encrypt. Now that I have Duck DNS set up, I can’t access my mydomain.duckdns.org address internally, I have to navigate to 192.168.1.x internal address for my RPi. Not a big deal, mildly annoying…

… the problem comes with the HA iphone app. I have to set it up with one server address, so this won’t work if I want to be able to use the app both internally and externally of my network.

I am relatively confident this is what DNSmasq is for, but this is beyond my paygrade. Can someone help me out in getting this configured. To add confusion to this, I can’t change DNS settings on my ISP provided router, so I’ll need to change it on my individual devices… I think.

Thanks!

2

Bump, still having issues. Would love some guidance.

3

Have you had this to work before?

4

No, never. To be fair, I’m new to Home Assistance as of last week.

5

Are you including the port number too?

6

Yes, I am trying all possible combinations including and excluding the port number.

7

Curious, is your ISP Comcast? I have the same issue.

8

Your ISP provided router most likely doesn’t support NAT Loopback .

I’ve had the exact same problem in the past, I ended up getting a second router (behind the ISP provided one) which did have loopback support.

2 Likes
9

as @mvdarend said, its a loopback issue, most cheaper routers don’t support this function, maybe yours does, just enable it.

10

Thank you all for the replies. I am sure it is an NAT loopback issue. I have confirmed that my AT&T Router/Gateway does NOT support NAT loopback. As this conversation is on-going, I am looking in to purchasing another router. However, to get a decent router is going to set me back probably $150, at least. That is a steep price tag, especially considering that I’m PRETTY SURE there is another solution.

I’m given to understand that DNSmasq should be able to resolve this. Unfortunately, I am stretch a bit thin when it comes to my skills in this area. I was hoping someone had some experience setting up something like this, and could share their experience.

1 Like
11

Did you figure this one out? I have the same problem