Dietpi issue with Hotspot

Troubleshooting
1

Creating a bug report/issue

Required Information

- DietPi version | cat /boot/dietpi/.version
G_DIETPI_VERSION_CORE=8
G_DIETPI_VERSION_SUB=16
G_DIETPI_VERSION_RC=2
G_GITBRANCH=‘master’
G_GITOWNER=‘MichaIng’
G_LIVE_PATCH_STATUS[0]=‘not applicable’

- Distro version | echo $G_DISTRO_NAME $G_RASPBIAN
bullseye 0

- Kernel version | uname -a
Linux DietPi 6.1.21-v8+ #1642 SMP PREEMPT Mon Apr 3 17:24:16 BST 2023 aarch64 GNU/Linux

- Architecture | dpkg --print-architecture
arm64

- SBC model | echo $G_HW_MODEL_NAME or (EG: RPi3)
RPi 4 Model B (aarch64)

- Power supply used | (EG: 5V 1A RAVpower)
5V 1A

- SD card used | (EG: SanDisk ultra)
SanDisk Extreme 64Go

Additional Information (if applicable)

  • Software title | Hotspot
  • Was the software title installed freshly or updated/migrated? update
  • Can this issue be replicated on a fresh installation of DietPi?
    ← If you sent a “dietpi-bugreport”, please paste the ID here →
    d7d5e504-5697-40f1-a8d8-20a7d39a0e7f
  • Bug report ID | echo $G_HW_UUID

Steps to reproduce

**dietpi@DietPi:~$ cat /etc/network/interfaces**
# Location: /etc/network/interfaces
# Please modify network settings via: dietpi-config
# Or create your own drop-ins in: /etc/network/interfaces.d/

# Drop-in configs
source interfaces.d/*

# Ethernet
allow-hotplug eth0
iface eth0 inet static
address 192.168.0.100
netmask 255.255.255.0
gateway 192.168.0.254
#dns-nameservers 9.9.9.9 192.168.0.100

# WiFi
allow-hotplug wlan0
iface wlan0 inet static
address 192.168.42.1
netmask 255.255.255.0
#gateway 192.168.0.1
#dns-nameservers 9.9.9.9 149.112.112.112
pre-up iw dev wlan0 set power_save off
post-down iw dev "wlan0 set power_save on

# iptables NAT rules
up iptables-restore < /etc/iptables.ipv4.nat
up ip6tables-restore < /etc/iptables.ipv6.nat

**dietpi@DietPi:~$ cat /etc/default/isc-dhcp-server** 
INTERFACESv4="wlan0"

mai 06 08:37:38 DietPi dhcpd[3911]: No subnet declaration for wlan0 (no IPv4 addresses).
mai 06 08:37:38 DietPi dhcpd[3911]: ** Ignoring requests on wlan0.  If this is not what
mai 06 08:37:38 DietPi dhcpd[3911]:    you want, please write a subnet declaration
mai 06 08:37:38 DietPi dhcpd[3911]:    in your dhcpd.conf file for the network segment
mai 06 08:37:38 DietPi dhcpd[3911]:    to which interface wlan0 is attached. **
mai 06 08:37:38 DietPi dhcpd[3911]: 
mai 06 08:37:38 DietPi dhcpd[3911]: 
mai 06 08:37:38 DietPi dhcpd[3911]: Not configured to listen on any interfaces!
mai 06 08:37:38 DietPi dhcpd[3911]: 
mai 06 08:37:38 DietPi dhcpd[3911]: If you think you have received this message due to a bug rather
mai 06 08:37:38 DietPi dhcpd[3911]: than a configuration issue please read the section on submitting
mai 06 08:37:38 DietPi dhcpd[3911]: bugs on either our web page at www.isc.org or in the README file
mai 06 08:37:38 DietPi dhcpd[3911]: before submitting a bug.  These pages explain the proper
mai 06 08:37:38 DietPi dhcpd[3911]: process and the information we find helpful for debugging.
mai 06 08:37:38 DietPi dhcpd[3911]: 
mai 06 08:37:38 DietPi dhcpd[3911]: exiting.
mai 06 08:37:38 DietPi kernel: IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
mai 06 08:37:38 DietPi hostapd[3895]: wlan0: interface state UNINITIALIZED->ENABLED
mai 06 08:37:38 DietPi hostapd[3895]: wlan0: AP-ENABLED
mai 06 08:37:38 DietPi systemd[1]: Started Access point and authentication server for Wi-Fi and Ethernet.


**dietpi@DietPi:~$ ip a**
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether dc:a6:32:83:31:28 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.100/24 brd 192.168.0.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::dea6:32ff:fe83:3128/64 scope link 
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether dc:a6:32:83:31:2c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::dea6:32ff:fe83:312c/64 scope link 
       valid_lft forever preferred_lft forever


IP address on the wlan0 does not remain



**dietpi@DietPi:~$ sudo cat /etc/hostapd/hostapd.conf**
interface=wlan0
driver=nl80211
ssid=DietPi-HotSpot
hw_mode=g
channel=3
macaddr_acl=0
auth_algs=1
ignore_broadcast_ssid=0
wpa=2
wpa_passphrase=XXX
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP
rsn_pairwise=CCMP
ieee80211n=1
country_code=FR

Extra details

Hi, I use my raspberry pi as a wifi hotspot pihole.
everything worked fine until now. but since a few days following an update I think. the wifi hotpspot is no longer recognized

  • …
2

We had a similar report already :thinking:. Can you show the output of:

cat /etc/dhcp/dhcpd.conf
ifup wlan0
systemctl restart isc-dhcp-server
sleep 3
journalctl -u isc-dhcp-server
3

Thank MichaIng for your answer.

dietpi@DietPi:~$ cat /etc/dhcp/dhcpd.conf
ddns-update-style none;
default-lease-time 600;
max-lease-time 7200;
authoritative;
log-facility local7;

subnet 192.168.42.0 netmask 255.255.255.0 {
        range 192.168.42.10 192.168.42.50;
        option broadcast-address 192.168.42.255;
        option routers 192.168.42.1;
        option domain-name "local";
        option domain-name-servers 9.9.9.9, 149.112.112.112;
}


dietpi@DietPi:~$ ip a
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether dc:a6:32:83:31:2c brd ff:ff:ff:ff:ff:ff
    inet6 fe80::dea6:32ff:fe83:312c/64 scope link 
       valid_lft forever preferred_lft forever

dietpi@DietPi:~$ sudo ifup wlan0
dietpi@DietPi:~$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host 
       valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether dc:a6:32:83:31:28 brd ff:ff:ff:ff:ff:ff
    inet 192.168.0.100/24 brd 192.168.0.255 scope global eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::dea6:32ff:fe83:3128/64 scope link 
       valid_lft forever preferred_lft forever
3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
    link/ether dc:a6:32:83:31:2c brd ff:ff:ff:ff:ff:ff
    inet 192.168.42.1/24 brd 192.168.42.255 scope global wlan0
       valid_lft forever preferred_lft forever
    inet6 fe80::dea6:32ff:fe83:312c/64 scope link 
       valid_lft forever preferred_lft forever
dietpi@DietPi:~$ 

dietpi@DietPi:~$ sudo systemctl restart isc-dhcp-server
dietpi@DietPi:~$ sleep 3
dietpi@DietPi:~$ sudo journalctl -u isc-dhcp-server
mai 07 17:12:51 DietPi systemd[1]: Starting LSB: DHCP server...
mai 07 17:12:51 DietPi isc-dhcp-server[42028]: Launching IPv4 server only.
mai 07 17:12:51 DietPi dhcpd[42037]: Internet Systems Consortium DHCP Server 4.4.1
mai 07 17:12:51 DietPi dhcpd[42037]: Copyright 2004-2018 Internet Systems Consortium.
mai 07 17:12:51 DietPi dhcpd[42037]: All rights reserved.
mai 07 17:12:51 DietPi dhcpd[42037]: For info, please visit https://www.isc.org/software/dhcp/
mai 07 17:12:51 DietPi dhcpd[42043]: Internet Systems Consortium DHCP Server 4.4.1
mai 07 17:12:51 DietPi dhcpd[42043]: Copyright 2004-2018 Internet Systems Consortium.
mai 07 17:12:51 DietPi dhcpd[42043]: All rights reserved.
mai 07 17:12:51 DietPi dhcpd[42043]: For info, please visit https://www.isc.org/software/dhcp/
mai 07 17:12:51 DietPi dhcpd[42043]: Wrote 1 leases to leases file.
mai 07 17:12:51 DietPi dhcpd[42043]: Server starting service.
mai 07 17:12:53 DietPi isc-dhcp-server[42028]: Starting ISC DHCPv4 server: dhcpd.
mai 07 17:12:53 DietPi systemd[1]: Started LSB: DHCP server.

thank MichaIng it works !

4

ok the WiFi interface was not up correctly. Does it survive a reboot?

5

Can you tell me, where the following wifi IP comes from, when dietpi config does its hotspot thing?

cat /etc/network/interfaces
...
# WiFi
...
address 192.168.42.1

192.168.42.0 is the network of my eth0 and 192.168.42.1 collides with the router on the wired network. How can I reconfigure the hotspot network in a dietpi save way?
I already tried to change /etc/dhcp/dhcpd.conf to use another network, but this only results in dhcpd[1675]: No subnet declaration for wlan0 (192.168.42.1). when doint systemctl restart isc-dhcp-server

6

/etc/network/interfaces is modifiable via dietpi-config → 7 : network options: Adapters

7

We use IP range 192.168.42.0 for the hotspot network. Means 192.168.42.1 is the WiFi Hotspot Access point interface address. You would need to manually adjust WiFi interface IP and hotspot + DHCP server configs.

8

Where would be the best place to set the network manually?
How would I override the entry in /etc/network/interfaces like stated in the same file?

Please modify network settings via: dietpi-config
Or create your own drop-ins in: /etc/network/interfaces.d/

When I copy paste the existing wifi entry to a new file in /etc/network/interfaces.d/mynetwork with a different address, it shows up as a second entry for wlan0 in ip address.

9

you should be able to adjust configuration directly inside /etc/network/interfaces

10

is this file save on reboots or on dietpi updates?
running dietpi-config → 7 : network options: Adapters → Apply will for sure rewrite this file.
my nanoPi will run in a remote location with bad physical access to reconfigure network settings :wink:

Or is there a setting somewhere to define the hotspot network address to use?

11

The file is is not going to change until you reconfigure things.

1 Like