Messages

Thanks for your replies.

@newsense
I'll check with the vendor.
nero355 is right that these days a lot of products are released in beta stage haha, and it is a relatively new product.

@nero355
Yes maybe some weird compatibility issue. I'll ask the vendor if this is a known bug.
I was just checking if there's something obvious I should look at first.

The air purifier is a:
IQAir HealthPro 250 XE
Firmware version 0.15.0
Hardware version: 4
Comm. chip - Firmware version: 0.5.0
Comm. chip - Hardware version: 1
I don't see any option in the app to request a firmware update or check if I have the latest version. I assume the firmware updates automatically.

The access point is:
Aruba AP-505
I have three of them and run the local based Aruba Instant controller (not to be confused with the cloud based Aruba Instant On)
I'm running firmware version 8.12.0.2_90468 SSR

I checked the release date:
8.12.0.2 Release date: August 2024
8.13.2.0 Release date: March 2026

I don't run the latest version, so I could update to the latest version and see if that helps. I doubt it though. I haven't bothered to update since everything was running fine and I didn't want to spend the time and the possibility of breaking things. As far as I know there are no security issues with this release. And even if there are the risk would be low since anyone would need to be in range of the WiFi. The access points themselves are blocked from the internet.

I have an Air Purifier which is wirelessly connected to my network. It loses internet connection after 1 to 3 days. After it loses its internet connection I unplug and plug the power cord. After I do this it connects within a few minutes. I can also disconnect the client in my WAP controller and when I do this it also reconnects within a few minutes.

I have the following network configuration:
OPNsense router
a few managed layer 2 switches
a few WAPs

The Air Purifier has excellent wifi signal as checked in my WAP controller, it is within 3 meters of a WAP which is mounted on the ceiling and has line of sight. It always connects to this closest WAP. This WAP is connected as follows: WAP-switch-switch-OPNsense

When the device loses internet connection, it still stays connected to the Wifi as I can see in WAP manager. Even after a few days it's still connected.
It seems to be a DHCP issue.
If I look in the Dnsmasq log I see a continuous DHCPOFFER - DHCPDISCOVER loop.
When I unlug the unit and power it again, I see about 10 times DHCPOFFER - DHCPDISCOVER, before I see it followed by DHCPREQUEST, DHCPACK. When it loses connection after 1-3 days, sometimes 10 hours, sometimes 2,5 days (it's random). It fails and keeps looping, I see thousands of entries in the log for a day.
Weirly, the time after which it loses connection looks random to me and is not related to the lease time. I can set a lease time of a day or an hour or a minute in dnsmasq for this device. Makes no difference on when it loses internet connection.

I tried a lot of different things but none of them fixed the issue and I don't know where to look next.
Maybe it's not me, but the device that has poor code? It's a high end device so you'd think it can't be that everyone is having this issue.
All my other devices (IOTs, laptop, phones, watches) work perfectly. Although I do see some DHCPREPLY-DHCPCONFIRM loops when I look at my iphone in the log.

Things I tried:
- I recently changed my DHCP server from ISC-DHCP to Dnsmasq. I had to change anyway at some time so I thought might as well check if there's an issue with ISC-DHCP. Didn't solve the issue.
- I changed the lease time
- I tried giving it a static ip address
- I tried using a different SSID on my WAP to which I only assigned 2.4Ghz and not also 5Ghz.
- I tried using WPA2 instead of WPA3
- I tried disabling spanning tree protocol on my switches

Any advice on what it could be and what I could try next?