Linux dhcp start failed

Why can’t I start isc-dhcp-server upon installation?

I’m following this tutorial to install Linux in a system that does not have CD reader nor USB boot capabilities. Eventually, I reached the point where I had to install isc-dhcp-server and I did, sort of. Apt tells me that there’s one partially installed package. I run sudo apt-get install -f and I get the following:

Job for isc-dhcp-server.service failed. See 'systemctl status isc-dhcp server.service' and 'journalctl -xn' for details. invoke-rc.d: initscript isc-dhcp-server, action "start" failed. dpkg: error processing package isc-dhcp-server (--configure): subprocess installed post-installation script returned error exit status 1 Errors were encountered while processing: isc-dhcp-server E: Sub-process /usr/bin/dpkg returned an error code (1) 

If I do /etc/init.d/isc-dhcp-server start the prompt consists of the first two lines of the same message. Output from sudo systemctl status isc-dhcp-server :

● isc-dhcp-server.service - LSB: DHCP server Loaded: loaded (/etc/init.d/isc-dhcp-server) Active: failed (Result: exit-code) since Fri 2014-12-12 13:19:25 CST; 2min 43s ago Process: 1677 ExecStart=/etc/init.d/isc-dhcp-server start (code=exited, status=1/FAILURE) Dec 12 13:19:23 semplice dhcpd[1684]: you want, please write a subnet declaration Dec 12 13:19:23 semplice dhcpd[1684]: in your dhcpd.conf file for the network segment Dec 12 13:19:23 semplice dhcpd[1684]: to which interface eth0 is attached. ** Dec 12 13:19:23 semplice dhcpd[1684]: Dec 12 13:19:23 semplice dhcpd[1684]: Dec 12 13:19:25 semplice isc-dhcp-server[1677]: Starting ISC DHCP server: dhcpdcheck syslog for diagnostics. . failed! Dec 12 13:19:25 semplice isc-dhcp-server[1677]: failed! Dec 12 13:19:25 semplice systemd[1]: isc-dhcp-server.service: control process exited, code=exited status=1 Dec 12 13:19:25 semplice systemd[1]: Failed to start LSB: DHCP server. Dec 12 13:19:25 semplice systemd[1]: Unit isc-dhcp-server.service entered failed state. 

-- Logs begin at Fri 2014-12-12 12:57:16 CST, end at Fri 2014-12-12 13:32:01 CST. -- Dec 12 13:31:58 semplice NetworkManager[505]: lease time 86400 Dec 12 13:31:58 semplice NetworkManager[505]: nameserver '192.168.1.254' Dec 12 13:31:58 semplice NetworkManager[505]: domain name 'lan' Dec 12 13:31:58 semplice dbus[518]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.ser Dec 12 13:31:58 semplice dbus[518]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher' Dec 12 13:31:58 semplice nm-dispatcher[2194]: Dispatching action 'dhcp4-change' for wlan0 Dec 12 13:31:58 semplice dhclient[616]: bound to 192.168.1.65 -- renewal in 45 seconds. Dec 12 13:31:58 semplice NetworkManager[505]: bound to 192.168.1.65 -- renewal in 45 seconds. Dec 12 13:32:01 semplice sudo[2197]: alejandro : TTY=pts/0 ; PWD=/home/alejandro ; USER=root ; COMMAND=/bin/journalctl -xn Dec 12 13:32:01 semplice sudo[2197]: pam_unix(sudo:session): session opened for user root by alejandro(uid=0) 

This is my /etc/dhcp/dhcpd.config file wich is just a copy of the example in the tutorial mentioned above. Output from /var/log/syslog read immediately after running apt-get install -f

Dec 12 16:42:40 localhost dhclient: DHCPREQUEST on wlan0 to 192.168.1.254 port 67 Dec 12 16:42:40 localhost NetworkManager[505]: DHCPREQUEST on wlan0 to 192.168.1.254 port 67 Dec 12 16:42:40 localhost dhclient: DHCPACK from 192.168.1.254 Dec 12 16:42:40 localhost NetworkManager[505]: DHCPACK from 192.168.1.254 Dec 12 16:42:40 localhost NetworkManager[505]: (wlan0): DHCPv4 state changed renew -> renew Dec 12 16:42:40 localhost NetworkManager[505]: address 192.168.1.65 Dec 12 16:42:40 localhost NetworkManager[505]: plen 24 (255.255.255.0) Dec 12 16:42:40 localhost NetworkManager[505]: gateway 192.168.1.254 Dec 12 16:42:40 localhost NetworkManager[505]: server identifier 192.168.1.254 Dec 12 16:42:40 localhost NetworkManager[505]: lease time 86400 Dec 12 16:42:40 localhost NetworkManager[505]: nameserver '192.168.1.254' Dec 12 16:42:40 localhost NetworkManager[505]: domain name 'lan' Dec 12 16:42:40 localhost dbus[518]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' Dec 12 16:42:40 localhost dbus[518]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher' Dec 12 16:42:40 localhost nm-dispatcher: Dispatching action 'dhcp4-change' for wlan0 Dec 12 16:42:41 localhost dhclient: bound to 192.168.1.65 -- renewal in 52 seconds. Dec 12 16:42:41 localhost NetworkManager[505]: bound to 192.168.1.65 -- renewal in 52 seconds. Dec 12 16:43:32 localhost dhclient: DHCPREQUEST on wlan0 to 192.168.1.254 port 67 Dec 12 16:43:32 localhost NetworkManager[505]: DHCPREQUEST on wlan0 to 192.168.1.254 port 67 Dec 12 16:43:32 localhost dhclient: DHCPACK from 192.168.1.254 Dec 12 16:43:32 localhost NetworkManager[505]: DHCPACK from 192.168.1.254 Dec 12 16:43:32 localhost NetworkManager[505]: (wlan0): DHCPv4 state changed renew -> renew Dec 12 16:43:32 localhost NetworkManager[505]: address 192.168.1.65 Dec 12 16:43:32 localhost NetworkManager[505]: plen 24 (255.255.255.0) Dec 12 16:43:32 localhost NetworkManager[505]: gateway 192.168.1.254 Dec 12 16:43:32 localhost NetworkManager[505]: server identifier 192.168.1.254 Dec 12 16:43:32 localhost NetworkManager[505]: lease time 86400 Dec 12 16:43:32 localhost NetworkManager[505]: nameserver '192.168.1.254' Dec 12 16:43:32 localhost NetworkManager[505]: domain name 'lan' Dec 12 16:43:32 localhost dbus[518]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service' Dec 12 16:43:32 localhost dbus[518]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher' Dec 12 16:43:32 localhost nm-dispatcher: Dispatching action 'dhcp4-change' for wlan0 Dec 12 16:43:33 localhost dhclient: bound to 192.168.1.65 -- renewal in 54 seconds. Dec 12 16:43:33 localhost NetworkManager[505]: bound to 192.168.1.65 -- renewal in 54 seconds. Dec 12 16:43:40 localhost dhcpd: Internet Systems Consortium DHCP Server 4.3.1 Dec 12 16:43:40 localhost dhcpd: Copyright 2004-2014 Internet Systems Consortium. Dec 12 16:43:40 localhost dhcpd: All rights reserved. Dec 12 16:43:40 localhost dhcpd: For info, please visit https://www.isc.org/software/dhcp/ Dec 12 16:43:40 localhost dhcpd: Internet Systems Consortium DHCP Server 4.3.1 Dec 12 16:43:40 localhost dhcpd: Copyright 2004-2014 Internet Systems Consortium. Dec 12 16:43:40 localhost dhcpd: All rights reserved. Dec 12 16:43:40 localhost dhcpd: For info, please visit https://www.isc.org/software/dhcp/ Dec 12 16:43:40 localhost dhcpd: Wrote 0 deleted host decls to leases file. Dec 12 16:43:40 localhost dhcpd: Wrote 0 new dynamic host decls to leases file. Dec 12 16:43:40 localhost dhcpd: Wrote 0 leases to leases file. Dec 12 16:43:40 localhost dhcpd: Dec 12 16:43:40 localhost dhcpd: No subnet declaration for eth0 (no IPv4 addresses). Dec 12 16:43:40 localhost dhcpd: ** Ignoring requests on eth0. If this is not what Dec 12 16:43:40 localhost dhcpd: you want, please write a subnet declaration Dec 12 16:43:40 localhost dhcpd: in your dhcpd.conf file for the network segment Dec 12 16:43:40 localhost dhcpd: to which interface eth0 is attached. ** Dec 12 16:43:40 localhost dhcpd: Dec 12 16:43:40 localhost dhcpd: Dec 12 16:43:40 localhost dhcpd: Not configured to listen on any interfaces! Dec 12 16:43:40 localhost dhcpd: Dec 12 16:43:40 localhost dhcpd: If you think you have received this message due to a bug rather Dec 12 16:43:40 localhost dhcpd: than a configuration issue please read the section on submitting Dec 12 16:43:40 localhost dhcpd: bugs on either our web page at www.isc.org or in the README file Dec 12 16:43:40 localhost dhcpd: before submitting a bug. These pages explain the proper Dec 12 16:43:40 localhost dhcpd: process and the information we find helpful for debugging.. Dec 12 16:43:40 localhost dhcpd: Dec 12 16:43:40 localhost dhcpd: exiting. Dec 12 16:43:42 localhost isc-dhcp-server[5729]: Starting ISC DHCP server: dhcpdcheck syslog for diagnostics. . failed! Dec 12 16:43:42 localhost isc-dhcp-server[5729]: failed! Dec 12 16:43:42 localhost systemd[1]: isc-dhcp-server.service: control process exited, code=exited status=1 Dec 12 16:43:42 localhost systemd[1]: Failed to start LSB: DHCP server. Dec 12 16:43:42 localhost systemd[1]: Unit isc-dhcp-server.service entered failed state. 

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Debian User Forums

Debian 8 DHCP Server error «Failed to start LSB: DHCP Server

Debian 8 DHCP Server error «Failed to start LSB: DHCP Server

#1 Post by BorrowedByte » 2017-10-23 09:06

I installed Debian 8 on Virtual Box and also updated and upgraded, but when I install DHCP and edited the files with my config, when i try to do a «service isc-dhcp-server restart» i got this message «Failed to start LSB: DHCP Server».
I had tried my config and also diferent ones from tutorials on youtube, and keeps doing the same.

What could be the problem please? Thanks in advance for your help.

reinob Posts: 1144 Joined: 2014-06-30 11:42 Has thanked: 80 times Been thanked: 41 times

Re: Debian 8 DHCP Server error «Failed to start LSB: DHCP Se

#2 Post by reinob » 2017-10-23 11:26

I installed Debian 8 on Virtual Box and also updated and upgraded, but when I install DHCP and edited the files with my config, when i try to do a «service isc-dhcp-server restart» i got this message «Failed to start LSB: DHCP Server».
I had tried my config and also diferent ones from tutorials on youtube, and keeps doing the same.

What could be the problem please? Thanks in advance for your help.

Well, for starters, check the relevant logs and post here whatever may look relevant.
Then we take it from there..

Re: Debian 8 DHCP Server error «Failed to start LSB: DHCP Se

#3 Post by BorrowedByte » 2017-10-23 12:36

So far this is my config, but still not working
Any help will be great, its driving me mad allready.

Re: Debian 8 DHCP Server error «Failed to start LSB: DHCP Se

#4 Post by Woefdram » 2017-10-24 03:19

It seems to me that you’re trying to run a DHCP server on an interface that is configurerd with DHCP. You have mixed up the configuration of your network card, as defined in /etc/network/interfaces.

iface eth0 inet dhcp address .. netmask ..

You should replace the «dhcp» with «static» (and restart the interface).

My guess is that the dhcp-client takes the interface, so that the dhcp-server can not.

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Problem configuring dhcp server: Job failed to start

I m trying to configure dhcp server in ubtuntu onto my virtual box and connecting other virtual instance of ubuntu to this dhcp sever i have installed dhcp server using sudo apt-get isc-dhcp-server then i went to /etc/networks/interfaces and wrote this

auto eth0 iface eth0 inet static address 192.168.1.1 netmask 255.255.255.0 gateway 192.168.1.254 broadcast 192.168.1.255 dns-nameserver 192.168.1.254 dns-search lan 

i then restarted networking service using sudo service networking restart suddenly my GUI crashed and hanged and all that stuff, which forced me to reboot the system. i checked for ip which showed me that i had got it. then i went to /etc/default/isc-dhcp-server and made this change INTERFACES=»eth0″ then i went to /etc/dhcp/dhcpd.conf and wrote the following lines

ddns-update-style none; default-lease-time 600; max-lease-time 7200; authoritative; log-facility local7; option broadcast-address 192.168.1.255; option routers 192.168.1.254; option domain-name-servers-192.168.2.1; option domain-name "ttc.com"; subnet 192.168.1.0 netmask 255.255.255.0

i restarted the service using sudo services isc-dhcp-server but it says: stop: unknown instance: start: Job failed to start i also tried to start dhcp server using the command sudo service isc-dhcp-server start but when i tried sudo start isc-dhcp-server or sudo status isc-dhcp-server it shows me an error of iscinitctl: Unable to connect to system bus: Failed to connect to socket /var/run/dbus/system_bus_socket. No such file or directory. i don’t know what to do now so please give me some guidence solving this error. I would like to provide more details i needed.

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