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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?
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?
