[SOLVED]DHCP server not working

[Armin@netPI]

Dear yoshikawa-san,

I have investigated the problem with my personal NIOT-E-NPI3-51-EN-RE device in the office.

I reset it to factory default by updating it to V1.200 firmware version. So it is a fresh device with no containers on it and just loaded with the raw netPI OS with web UI.

I setup the very same static LAN IP network settings and also the Wifi AP with password 12345678 with all the other settings in accordance to your screen shot.

I have let my notebook connected to this Wifi AP and also I have my mobile phone connected to the same Wifi AP. Both get IP addresses as expected.

Then I have powered off my netPI and powered it on again 7 times. After reboot both clients ... notebook and mobile phone ... do get a proper IP address again.

Then I have used the "Reboot" function 5 times in web UI of netPI to check if there is a problem. But also here notebook and mobile phone are getting IP addresses in all cases.

As next I have downloaded my syslog file an searched for "FAILED to start up" and I found this term multiple times in it like this example shows:

Code:

<30>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B NetworkManager 972 - - dnsmasq: failed to create listening socket for 192.168.205.2: Cannot assign requested address
<26>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B dnsmasq 1232 - - failed to create listening socket for 192.168.205.2: Cannot assign requested address
<26>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B dnsmasq 1232 - - FAILED to start up
<4>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B NetworkManager 972 - - <warn>  [1592894360.4236] dnsmasq[0x247f650]: dnsmasq exited with error: Network access problem (address in use, permissions) (2)
<4>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B NetworkManager 972 - - <warn>  [1592894360.4250] dns-mgr: plugin dnsmasq child quit unexpectedly
<30>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B avahi-daemon 909 - - Joining mDNS multicast group on interface wlan0.IPv4 with address 192.168.205.2.
<30>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B avahi-daemon 909 - - New relevant interface wlan0.IPv4 for mDNS.
<30>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B avahi-daemon 909 - - Registering new address record for 192.168.205.2 on wlan0.IPv4.
<30>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B dnsmasq 1236 - - started, version 2.78 cachesize 400
<30>1 2020-06-23T06:39:20+00:00 NTB827EB3B557B dnsmasq 1236 - - compile time options: IPv6 GNU-getopt DBus no-i18n no-IDN DHCP DHCPv6 no-Lua TFTP no-conntrack ipset auth no-DNSSEC loop-detect inotify
<30>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B dnsmasq 1236 - - DBus support enabled: connected to system bus
<28>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B dnsmasq 1236 - - warning: no upstream servers configured
<30>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B dnsmasq-dhcp 1236 - - DHCP, IP range 192.168.205.3 -- 192.168.205.100, lease time 4h
<30>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B dnsmasq-dhcp 1236 - - DHCP, sockets bound exclusively to interface wlan0
<30>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B systemd 1 - - Created slice system-upnpd.slice.
<30>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B dnsmasq 1236 - - cleared cache
<30>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B systemd 1 - - Starting upnp daemon...
<30>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B dnsmasq 1236 - - setting upstream servers from DBus
<30>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B dnsmasq 1236 - - using nameserver 192.168.100.50#53(via eth0)
<30>1 2020-06-23T06:39:21+00:00 NTB827EB3B557B dnsmasq 1236 - - cleared cache

But if I look further in the log file shown above that nevertheless the service "dnsmasq-dhcp" is started for IP range 192.168.205.3 to 192.168.205.100 as you can see. So my questions is does your log file show the same?

Thx
Armin