Hello I have configured mesh where omnia acts as mesh node and connect other 4 Dlink DAP-X1860 APs flashed with latest openwrt. It works perfectly, however I lost visibility who is connected and where. At mesh nodes I see only ? insted of names from DHCP. I would like to see translations at my APs and also have overview which device connect where.
Is there any way hot to achieve this? To transfer DHCP names to be shown in luci I found script way which is not perfect mainly when I must copy to several targets…
and make it executable:
‘‘‘chmod +x /root/dhcp-list‘‘‘
Create following file „/etc/xinetd.d/dhcpleases“:
‘‘‘
service dhcpleases
{
socket_type = stream
protocol = tcp
port = 8000
wait = no
user = root
group = root
server = /root/dhcp-list
disable = no
type = UNLISTED
only_from = „your LAN network“
}
Add following cron task on every AP:
‘‘‘* * * * * nc „Router IP“ 8000 > /tmp/dhcp.leases
‘‘‘
Pros:
easy to set up
Not much overhead
No extra software/script needed on APs
Cron entry is preserved during upgrades on APs
Cons:
No authentication, every LAN client can connect to Port 8000 on your Router an get dhcp list but there is no real critical information in it as every LAN client can scan LAN network on ita own and get the same information
Thank you this solves my first problem. And is there any service which would tell me which clients/mac addresses are currently connected? Ideally like HTML page. I know I can run arp at router manually.
I tried to set it up, but it the file that is created on the dump aps is empty.
whereas the /tmp/dhcp.leases on my router has as of writing this 33 active leases
Any idea what would cause this problem?
I just configured it for myself and it works for me. I suspect that the script is using shebang for bash which might not be installed on your Turris device. Try changing it to #!/bin/sh at first line. Then restart xinetd service and post output of
This is really weird.
When executing sh /root/dhcp-list it prints the leases. So this part is working (thanks @AreYouLoco !).
But executing netcat does not work (I double checked it is installed). Opening Port 8000 to lan didn’t help either.
Side note: it also completed with nothing when I didn’t have netcat installed.
root@turris:~# nmap 192.168.1.1 -p 8000
Starting Nmap 7.95 ( https://nmap.org ) at 2025-04-14 12:48 CEST
Nmap scan report for 192.168.1.1
Host is up (0.00031s latency).
PORT STATE SERVICE
8000/tcp open http-alt
MAC Address: <MAC> (Unknown)
Nmap done: 1 IP address (1 host up) scanned in 0.57 seconds
edit: forgot to print this output:
root@turris:~# netstat -tulpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
[...]
tcp 0 0 0.0.0.0:8000 0.0.0.0:* LISTEN 19919/xinetd
[...]
I believe turris is your AP not the router. Depending what you have in only_from it might work
Check your xinetd service then and /etc/init.d/xinetd restart && logread | grep xinetd
Here is mine:
root@router:~# cat /etc/xinetd.d/dhcp-leases
service dhcpleases
{
socket_type = stream
protocol = tcp
port = 8000
wait = no
user = nobody
group = nogroup
server = /root/bin/copy_dhcp_leases.sh
disable = no
type = UNLISTED
flags = NODELAY KEEPALIVE IPv4
only_from = %ACCESS_POINT_IP%
}
I’ve added TCP flags and changed execution user/group to default non-permisive for security. And since its port above 1024 so user nobody can do that. Also on my AP in cronjob I am executing it as user nobody and it works. Just had to delete once /tmp/dhcp.leases created as root on AP so user nobody can do it later on and create that file
Found the error - thanks a lot!!
I stupidly inserted in only_from not the IP-range, but the network name…
Now with inserting instead 192.168.1.1/24, it works like a charm!
