This topic

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Patrick4 — Mon, 14 Feb 2022 09:37:02 GMT

I've had exactly the same issue. Most problematic is that it affects Wemo devices and Nest thermostats, making them inoperational. I don't know how to set IP manually from these devices. You can change IP settings from the router but only if the device is disconnected and the device list has been fully refreshed by turning the router off and on again. Even then the IP settings revert to 10.0.1.XXX (Static).

Did you find a solution?

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Keith_Beddoe — Mon, 14 Feb 2022 10:13:51 GMT

That IP range is allocated to devices connected to the open BTWifi hotspot network, so if your devices are connecting to BTWifi instead of the home SSID, then that would explain it.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Patrick4 — Mon, 14 Feb 2022 10:52:07 GMT

Thanks very much for your help. I've checked the Nest device and it's definitely connected to the home wifi.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Keith_Beddoe — Mon, 14 Feb 2022 15:24:11 GMT

@Patrick4 wrote:

Thanks very much for your help. I've checked the Nest device and it's definitely connected to the home wifi.

Its possible that the devices are detecting the open BTWifi connection first, and getting their IP address from that. Then when they do eventually connect to the correct SSID, they no longer send a DHCP request to get the correct IP address.

The only way to prove that would be to opt out of BTWifi, assuming you are opted in. That would disable the open network.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Patrick4 — Mon, 14 Feb 2022 17:25:29 GMT

Thanks. I've opted out of BtWifi. I understand it takes time to go through. I'll let know if it helps.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Patrick4 — Mon, 14 Feb 2022 17:29:04 GMT

Actually I've just realised the problem also happens to devices using ethernet wired connection to the router so BtWifi shouldn't matter.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Keith_Beddoe — Mon, 14 Feb 2022 17:40:34 GMT

@Patrick4 wrote:

Actually I've just realised the problem also happens to devices using ethernet wired connection to the router so BtWifi shouldn't matter.

Do you have any other devices on your network which may have a DHCP server active? Like a NAS, powerline adapters, or wireless access point.

The DHCP server on BTWifi, should not propagate onto the LAN, unless there is a firmware bug.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Patrick4 — Mon, 14 Feb 2022 18:12:26 GMT

I have power line adapters, the bt Wi-fi disc and a Wi-fi access point. It’s a big house. But the problem happens on Wi-fi and lan. Even the bt halo 4g device got a bad ip when connected directly to the router by Ethernet. I notice the router ip is also wrong.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

licquorice — Mon, 14 Feb 2022 18:27:19 GMT

Factory reset the hub by pressing the recessed button with a pin for about 20 seconds until the lights flash.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Patrick4 — Mon, 14 Feb 2022 18:39:04 GMT

Thanks but factory reset doesn’t help I’m afraid

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

licquorice — Mon, 14 Feb 2022 18:40:57 GMT

What do actually mean when you say the hub IP address is wrong?

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Keith_Beddoe — Mon, 14 Feb 2022 19:30:28 GMT

@Patrick4 wrote:

I have power line adapters, the bt Wi-fi disc and a Wi-fi access point. It’s a big house. But the problem happens on Wi-fi and lan. Even the bt halo 4g device got a bad ip when connected directly to the router by Ethernet. I notice the router ip is also wrong.

Then one of those devices has a DHCP server active, most likely the wireless access point, as they often have a DHCP server enabled to allow easy setup, but it must be disabled afterwards.

Disconnect the wireless access point and the powerline adapters, then see if you get the wrong IP address when you connect a computer directly to the home hub.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Patrick4 — Mon, 14 Feb 2022 22:36:16 GMT

Looks like you've solved the issue. Disconnected all adapters and did another factory reset. All looks good so far. Thanks for your help.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Keith_Beddoe — Tue, 15 Feb 2022 06:40:27 GMT

@Patrick4 wrote:

Looks like you've solved the issue. Disconnected all adapters and did another factory reset. All looks good so far. Thanks for your help.

P

You now need to find out which device/adapter has a DHCP server enabled, and turn it off. There must only be one DHCP server active, and that is the BT Home Hub.

Re: Smart Hub 2 IP address issue, some devices connecting but no internet

Patrick4 — Tue, 15 Feb 2022 15:24:05 GMT

I’ll work through it and maybe let you know in a couple of weeks. I wonder if there’s an interaction with the bt disc extender and the tp link kit as the former is the most recent addition.

Thanks