List of connected devices

[psherman]

@linuxuser

The Fritzbox doesn't have DHCP enabled since a day and this openwrt router is the only router which has DHCP enabled.

Please verify that the Fritz DHCP server is indeed disabled.

@linuxuser

This openwrt-router is more or less my main router.

Not in the current configuration. The OpenWrt device appear to be purely a dumb AP.

@linuxuser

I don't understand why you call this router a dumb AP. As mentioned, it is a WDS upstream router.

A dumb AP is just an access point. It does not do any routing (L3). This is the case in your situation (at least from all appearances) as your Fritz is doing the actual routing... since it looks like this device only has a lan-lan connection to the fritz (not using the OpenWrt WAN). This is just acting as an DHCP server and AP. Even if it is a WDS upstream device, it's still 'just' an access point insofar as it is not routing. WDS is simply a method of wirelessly connecting two or more APs wirelessly on the same L2 network.

@linuxuser

Please tell me what I configured wrong / what I have to change.

You normally need to set the DHCP server such that option 3 advertises the correct gateway for your network. This appears to be the fritz at 192.168.178.1. Option 6 (DNS) can be used to point to the proper DNS server (which is also 192.168.178.1 per your lan config), but in this case it's probably not super critical insofar as OpenWrt is simply going to run its own DNS server and will send queries to the next specified upstream DNS (the fritz).

@linuxuser

How can I check this manually. I am pretty sure, there is no other DHCP-server running. I had this situation already with more than 1 dhcp-server and I fear dhcp was not disabled automatically. It was chaotic. Setup everything new.

One way you can do this is to disable the OpenWrt DHCP server on the lan interface, and then force a device to renew its DHCP lease. If it fails to do so, that means that OpenWrt's DHCP is indeed the only one that was running. At that point, re-enable it.

@linuxuser

I want to detect all devices, which are listed by IP-address.

Dumb AP - Associated Stations Resolver

Hi everyone, I have created a script for myself that would populate both /etc/hosts and /etc/ethers reliably so the Associated Stations listings would always contain at least an IP and a hostname if possible. This is what it looks like: [Screenshot 2023-03-03 at 14.01.47] Requirements To use it, it requires the package arp-scan to be installed. It will use pretty basic commands, which should be available on even the tiniest of devices, otherwise. The arp-scan-database is not required f…

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