Mdthbs

I try to set up a wifi access point with hostapd and isc-dhcpd but the dhcp server doesn't work. The conf file is the same I found in this tutorial:
[Hostapd : The Linux Way to create Virtual Wifi Access Point][1]

!!! I still have the problem and i already read the documentaion and man Pages...!!!!

This is the Error message I get when I want to start it with the command "systemctl start isc-dhcp-server.service" or "service isc-dhcp-server start"

Job for isc-dhcp-server.service failed because the control process exited with error code.

See "systemctl status isc-dhcp-server.service" and "journalctl -xe" for details.

This is the output of the command "systemctl status isc-dhcp-server.service":

root@l0calh0st:~# systemctl status isc-dhcp-server.service

● isc-dhcp-server.service - LSB: DHCP server

   Loaded: loaded (/etc/init.d/isc-dhcp-server; generated; vendor preset: disabled)

   Active: failed (Result: exit-code) since Tue 2018-01-09 18:23:07 CET; 3s ago

     Docs: man:systemd-sysv-generator(8)

  Process: 3831 ExecStart=/etc/init.d/isc-dhcp-server start (code=exited, status=1/FAILURE)



    Jan 09 18:23:05 l0calh0st dhcpd[3842]: bugs on either our web page at www.isc.org or in the README file

    Jan 09 18:23:05 l0calh0st dhcpd[3842]: before submitting a bug.  These pages explain the proper

    Jan 09 18:23:05 l0calh0st dhcpd[3842]: process and the information we find helpful for debugging..

    Jan 09 18:23:05 l0calh0st dhcpd[3842]: 

    Jan 09 18:23:05 l0calh0st dhcpd[3842]: exiting.

    Jan 09 18:23:07 l0calh0st isc-dhcp-server[3831]: Starting ISC DHCPv4 server: dhcpdcheck syslog for diagnostics. ... failed!

    Jan 09 18:23:07 l0calh0st isc-dhcp-server[3831]:  failed!

    Jan 09 18:23:07 l0calh0st systemd[1]: isc-dhcp-server.service: Control process exited, code=exited status=1

    Jan 09 18:23:07 l0calh0st systemd[1]: isc-dhcp-server.service: Failed with result 'exit-code'.

    Jan 09 18:23:07 l0calh0st systemd[1]: Failed to start LSB: DHCP server.

This is the etc/dhcp/dhcpd.conf file:

ddns-update-style none;

ignore client-updates;

authoritative;

option local-wpad code 252 = text;



subnet

10.0.0.0 netmask 255.255.255.0 {

# --- default gateway

option routers

10.0.0.1;

# --- Netmask

option subnet-mask

255.255.255.0;

# --- Broadcast Address

option broadcast-address

10.0.0.255;

# --- Domain name servers, tells the clients which DNS servers to use.

option domain-name-servers

10.0.0.1, 8.8.8.8, 8.8.4.4;

option time-offset

0;

range 10.0.0.3 10.0.0.13;

default-lease-time 1209600;

max-lease-time 1814400;

}

This is the /etc/default/isc-dhcp-server file:

# Defaults for isc-dhcp-server (sourced by /etc/init.d/isc-dhcp-server)



# Path to dhcpd's config file (default: /etc/dhcp/dhcpd.conf).

#DHCPDv4_CONF=/etc/dhcp/dhcpd.conf

#DHCPDv6_CONF=/etc/dhcp/dhcpd6.conf



# Path to dhcpd's PID file (default: /var/run/dhcpd.pid).

#DHCPDv4_PID=/var/run/dhcpd.pid

#DHCPDv6_PID=/var/run/dhcpd6.pid



# Additional options to start dhcpd with.

#   Don't use options -cf or -pf here; use DHCPD_CONF/ DHCPD_PID instead

#OPTIONS=""



# On what interfaces should the DHCP server (dhcpd) serve DHCP requests?

#   Separate multiple interfaces with spaces, e.g. "eth0 eth1".

INTERFACESv4="wlan0"

INTERFACESv6=""

This is the /etc/network/interfaces File: (I don't know if this is important)

# This file describes the network interfaces available on your system

# and how to activate them. For more information, see interfaces(5).



source /etc/network/interfaces.d/*



# The loopback network interface

auto lo

iface lo inet loopback





auto wlan0

iface wlan0 inet static

  address 10.0.0.14

  netmask 255.255.255.0

Output for "journalctl -xe"

Jan 09 19:59:50 l0calh0st dhcpd[4303]: 

Jan 09 19:59:50 l0calh0st dhcpd[4303]: 

Jan 09 19:59:50 l0calh0st dhcpd[4303]: Not configured to listen on any interfaces!

Jan 09 19:59:50 l0calh0st dhcpd[4303]: 

Jan 09 19:59:50 l0calh0st dhcpd[4303]: If you think you have received this message due to a bug rather

Jan 09 19:59:50 l0calh0st dhcpd[4303]: than a configuration issue please read the section on submitting

Jan 09 19:59:50 l0calh0st dhcpd[4303]: bugs on either our web page at www.isc.org or in the README file

Jan 09 19:59:50 l0calh0st dhcpd[4303]: before submitting a bug.  These pages explain the proper

Jan 09 19:59:50 l0calh0st dhcpd[4303]: process and the information we find helpful for debugging..

Jan 09 19:59:50 l0calh0st dhcpd[4303]: 

Jan 09 19:59:50 l0calh0st dhcpd[4303]: exiting.

Jan 09 19:59:52 l0calh0st isc-dhcp-server[4298]: Starting ISC DHCPv4 server: dhcpdcheck syslog for diagnostics. ... failed!

Jan 09 19:59:52 l0calh0st isc-dhcp-server[4298]:  failed!

Jan 09 19:59:52 l0calh0st systemd[1]: isc-dhcp-server.service: Control process exited, code=exited status=1

Jan 09 19:59:52 l0calh0st systemd[1]: isc-dhcp-server.service: Failed with result 'exit-code'.

Jan 09 19:59:52 l0calh0st systemd[1]: Failed to start LSB: DHCP server.

-- Subject: Unit isc-dhcp-server.service has failed

-- Defined-By: systemd

-- Support: https://www.debian.org/support

-- 

-- Unit isc-dhcp-server.service has failed.

ifconfig output:

root@l0calh0st:~# ifconfig

eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500

        inet 192.168.2.101  netmask 255.255.255.0  broadcast 192.168.2.255

        inet6 2003:50:ad02:a21:d455:ca81:501e:727a  prefixlen 64  scopeid 0x0<global>

        inet6 fe80::da92:2698:1cc8:40d  prefixlen 64  scopeid 0x20<link>

        ether 40:8d:5c:52:43:f4  txqueuelen 1000  (Ethernet)

        RX packets 10328  bytes 4043207 (3.8 MiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 9033  bytes 1272064 (1.2 MiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

        device interrupt 16  memory 0xdf200000-df220000  



lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536

        inet 127.0.0.1  netmask 255.0.0.0

        inet6 ::1  prefixlen 128  scopeid 0x10<host>

        loop  txqueuelen 1000  (Lokale Schleife)

        RX packets 286  bytes 18370 (17.9 KiB)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 286  bytes 18370 (17.9 KiB)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0



wlan0: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500

        ether da:a6:21:bc:a3:11  txqueuelen 1000  (Ethernet)

        RX packets 0  bytes 0 (0.0 B)

        RX errors 0  dropped 0  overruns 0  frame 0

        TX packets 0  bytes 0 (0.0 B)

        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

!!! I still have the problem and i already read the documentaion and man Pages...!!!!

The message Not configured to listen on any interfaces! is your clue.

When starting isc-dhcp-server it will not start unless there is a network device configured to be on the same subnet(s) that your service will be passing out addresses for.

So, you'll want to edit /etc/network/interfaces and make appropriate changes so that your wlan0 interface has an address in the 10.0.0.0/24 subnet that ISN'T within the range of your lease pool (10.0.0.3-10.0.0.13 based on your config file above). Once you can bring up the wlan0 interface wtih a 10.0.0.x IP then (re)starting the isc-dhcp-server daemon should work fine.

just add an ip address on the wlan NIC with the following command

    ifconfig wlan0 10.0.0.1