Joined: 11 Apr 2010 Posts: 318 Location: San Francisco Bay Area
Posted: Fri May 28, 2021 23:07 Post subject: Problem with Status, LAN, Active Clients for WiFi Devices
I am running 46446 std (04/24/21) on an Netgear R7000 router and have a problem with Status, LAN, Active Clients. Late last night I checked on the router and noticed that there were many Active Clients listed on the network that had been WiFi clients earlier but had left the network hours before. I assumed that when devices leave their WiFi connection to the network they also leave the Active Clients list on Status, LAN. This has not been the case with this release.
Any ideas? Is there a workaround to make sure the list only represents active devices on the network? Is this a bug? Should I move to a new release?
Joined: 11 Apr 2010 Posts: 318 Location: San Francisco Bay Area
Posted: Fri May 28, 2021 23:17 Post subject:
Other than this one issue, the router is running great.
I am defining the network directly with Dnsmasq commands on Services, Services, Additional Dnsmasq Options and have turned off the DHCP Server on Setup, Setup, Network Address Server Settings (DHCP). Here are the Dnsmasq commands:
Joined: 11 Apr 2010 Posts: 318 Location: San Francisco Bay Area
Posted: Sat May 29, 2021 0:56 Post subject:
I think it is a cache issue because this router is at a swim club in California. Its almost 6:00 PM here and the facility has emptied out. However, there is a large number of devices still listed on Status, LAN, Active Clients.
Joined: 11 Apr 2010 Posts: 318 Location: San Francisco Bay Area
Posted: Sat May 29, 2021 2:20 Post subject:
A router reboot clears it all out. There must be some command line mechanism I can set up on cron to clear the cache and not make a router reboot the only workaround.
Yes. A reboot does clear it out. But the same problem remains, at least for me. It was fixed for you?
To be at least somewhat descriptive, I turned off a phone awhile back and it remains in the active lease list. I waited a few minutes just to be sure. Satisfied its not going anywhere, I trashcan its lease. Then the phones MAC remains in the active lease list, while its hostname turns into an asterisk. Turning the phone back on brings the hostname back in place of the asterisk. Peculiar.
I assumed it was a symptom of a wider problem, since this isn't the only issue I'm having but I'm not gonna hijack your thread. For now, I'm just letting you know you're not alone. _________________ Netgear r8000 - DD-WRT v3.0-r46380
Joined: 08 May 2018 Posts: 14246 Location: Texas, USA
Posted: Sat May 29, 2021 5:33 Post subject:
I meant browser cache, not dhcp client lease db cache.
360 minutes is 6 hours; If they were there longer than 3 hours, the lease renewed, so it may take up to 12 hours for the lease to clear. If it's public wi-fi, set it for an hour lease time.
Do we no longer make a distinction between "active clients" and "DHCP leases"? There used to be, not long ago. For all the years I've been using DD WRT, a host would drop off the "active client" table once they disconnected.
Yes, the client's lease would remain in the "DHCP leases" table until the timer ran out. This seems both reasonable and useful information.
The fact that clients are remaining in the "active client" list, even when they are not active, suggests that there was a recent change, and perhaps not one that was intended. _________________ Netgear r8000 - DD-WRT v3.0-r46380