Posted: Sat May 14, 2022 7:39 Post subject: Why don't al DHCP hosts show up under "DHCP Clients&quo
In the status page, I have a computer connected, working, pingable, etc. It has an assigned IP address, everything is working fine, but it doesn't show up under "DHCP Clients".
Also many hostnames are left blank. I've chalked this up to some inherent way DHCP works, but it doesn't make sense to me. Shouldn't by necessity every active client have its IP address and hostname listed? _________________ So you’re a DD-WRT Expert? Figure this out: https://forum.dd-wrt.com/phpBB2/viewtopic.php?p=1168315
I then set static leases with an expiry of 15 minutes for these missing devices, rebooted the devices (NAS boxes), this should have triggered a DHCP request from devices and it did, and even after this, not all devices reliably show, I still had missing devices that didn't show up even after accessing them and sending data/receiving data.
These are all wired devices.
Rebooting dd-wrt and devices (power cycle) still same, not all show up, its a random bag of fun.
The only one that reliably shows up is the first static IP assignment and non expiring lease, which is my main dev machine. Also all wifi devices will show up (non expireing leases), but wired YMMV no matter if lease expires.
Dnsmasq afaik is a test version daemon.info dnsmasq: started, version 2.87test8 cachesize 1500 so this could have some influence on the reliability.
Im running latest 48865, I remember much older builds that always showed all devices without fail, so clearly bugs were introduced upstream, on the project (which is not developed by dd-wrt.
So that clients with DHCP reservation are not shown under "DHCP clients" is already quite a few years (I can't remember that it was ever different!).
and with me it works exactly as I have described it above.
I just have to log in to such a client and restart the network and suddenly the client is displayed again.
Running /etc/init.d/networking restart is deprecated because it may not enable again some interfaces
Reconfiguring network interfaces...
No resolv.conf for interface eth0.udhcpc
Sending select for 192.168.1.109...
Lease of 192.168.1.109 obtained, lease time 268435455
/etc/udhcpc.d/50default: Adding DNS 192.168.1.1