The Dynamic Host Configuration Protocol (DHCP) is a network configuration protocol that assigns IP addresses and gateway configuration automatically.

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dnsmasq getting log spam from use of macvlan interfaces

I'd like to know if this procedure will work for creating virtual eth interfaces inside an LXC. It seems to work for awhile then I get a spam of these every couple seconds. Jul 10 16:54:22 ...
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115 views

MAAS network configuration error and issue

I have tried a couple times to get MAAS up and running and the issues seems to be incorrect network configuration. I have a server with 2 net ports. EM1 is the network for MAAS and the servers that ...
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1answer
113 views

How to change Ubuntu DHCP server address on the client?

How do I tell Ubuntu to use a specific DHCP server IP? I'm building a virtual test network in VirtualBox where I have a Ubuntu server installed. However, VirtualBox doesn't have an option to tell ...
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1answer
235 views

DHCP3-server not working correctly

I installed dhcpe-server with apt-get install dhcp3-server, and I want to configure it on terminal. When i type dhcp i just see these : dhclient dhclient-script dhcpd dhcpx I tried to start its ...
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1answer
351 views

How can CUPS dynamically determine the IP address of a network printer?

I am trying to set up CUPS to access a network printer. Its IP address was assigned via DHCP by the internet router, which is also the DHCP server. I understand that this address may change from ...
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1answer
189 views

2 ubuntu dhcp servers

I would like to run 2 DHCP servers at the same time, each one should have differnt IP but both in the same subnet, same gateway but one has to have the first half of the DHCP rang and the other the ...
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1answer
1k views

Where is isc-dhcp-server configuration files in Ubuntu 14.04?

On Ubuntu 14.04 LTS I can not find the path to isc-dhcp-server as it is mentioned in several areas as in this (for Ubuntu 12.04). It is installed on my machine, but I want to access its configuration ...
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47 views

DHCP running at startup

In order for my WiFi at work to work I had to use wpa_supplicant, as the Network Manager just would not connect. Manually I use two commands: sudo wpa_supplicant -B -i wlan0 -c ...
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62 views

How to configure my Ubuntu server as a dhcp router

I have a little problem with configuring my ubuntu server properly. On the ubuntu server there are 3 internet cards and one of them is wi-fi card. I read a lot of info for my problem but i couldnt ...
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376 views

Ubuntu MAAS DHCP working DNS Not working

I setup Ubuntu 14.04 MAAS on one server. I setup interface to manage DHCP and DNS via the Cluster interface. DHCP is working. But, DNS is not! When I try to add another node, it is doing PXE boot, ...
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2answers
499 views

MAAS: Unable to start “Commisioned” nodes

I am having problems while trying to start my first node using KVM (QEMU 2.0.0) and MAAS. Automatic detection worked fine, and during the commission (virtual machine window) I get errors such as: ...
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2k views

Ubuntu Server 14.04 share internet from eth0 to eth1 with commandline

I have installed ubuntu server 14.04 LAMP with two network adapters and I'm attempting to share the network from eth0 (WAN) to eth1 (LAN). The reason for doing this is that the Ubuntu Server works as ...
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131 views

Ubuntu maas DNS Node not connected to internet

I have a Ubuntu MAAS Region and Cluster Controller on one Server. It is running DHCP Server as well. MAAS Cluster interface - "Manage DHCP and DNS" did not start a DHCP Server. So, I had to manually ...
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281 views

MAAS DHCP Server Setup, PXE TO1 TFTP File Not Found

I am setting Ubuntu 14.04 MAAS Cluoud. I have setup the region and cluster controller. For some reason, MAAS was not running DHCP even though (1) maas-dhcp and maas-dns were installed, and (2) Added a ...
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2answers
3k views

override dns nameserver

i wish to set higher priority for my dns nameservers, or override the ones that are being set by the dhcp server. no matter which approach i took, nslookup never displays the right dns nameserver. ...
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331 views

Ubuntu MAAS DHCP Not working Cluster

I am a newbie with Ubuntu MAAS - I have region & cluster controller running on one machine. I have two NICs - eth1 - which is connected to our organization and eth0 - which I am trying to setup ...
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2answers
2k views

Intermittent wired network issues in 14.04

Since yesterday, my wired network connection has been dropping for a couple of seconds every 30 seconds or so. To my knowledge, I had not made any changes to my network. Output of ifconfig -a: ➜ ~ ...
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103 views

Zentyal PDC on MAAS

OK, so I may be smoking crack here, but feel free to tell me... ;-) I currently have a server running Ubuntu 12.04 LTS and Zentyal 3.3, with the latter configured as my primary domain controller ...
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46 views

How to reset DHCP poolin ubuntu server 14.04?

Would like to know how to reset the DHCP pool in Ubuntu server 14.04, as I would like the server to advertise IP-addresses beginning from the start /first IP of the pool. Could anyone help please? ...
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32 views

DHCP server on MAAS

I have disabled DHCP on my router in my DNS and DHCP server is installed, configured the cluster, but my DHCP does not work and so I cannot add nodes via PXE. I'm using Ubuntu Cloud OpenStack 14.04.
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3k views

How to Stop DHCP Server

I have installed a DHCP Server. Now I need to stop the dhcp server, when I issue the command: sudo service isc-dhcp-server stop I get stop: Unknown instance. I confirm the DHCP service is running. ...
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123 views

Multi gateways & Vlans

With all your help and support, I’ve managed to configure an ubuntu dhcp server with 2 network cards, and it’s working well. Thanks again. My next step is more advanced, it’s to configure another one ...
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213 views

Static ip but dynamic nameservers?

Trying to change nameserver' settings for a Ubuntu-13.04 server I came upon this situation! /etc/network/interfaces : # This file describes the network interfaces available on your system # and how ...
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39 views

No ping to gateway although received DHCP lease from gateway

I try to connect my server to my network over WPA2. After ifup wlan0 I get a valid DHCP lease from my gateway (192.168.1.1). However, if I try to ping/access any computer (internal network, gateway, ...
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31 views

IP switched to dhcp on reboot on Ubuntu

I try to set a static IP with the following stanza in /etc/network/interface auto lo iface lo inet loopback allow-hotplug wlan0 iface wlan0 inet manual wpa-roam ...
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1answer
22k views

Assigning a static IP to Ubuntu Server 14.04 LTS

I've installed Ubuntu 14.04 LTS Server in my machine on a separate hard drive while having my Windows 7 installation. The Windows OS has its full network connectivity and internet access through the ...
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1answer
155 views

domain name in dhcp

I want to configure DHCP on 14.04. So I downloaded isc-dhcp-server from the repository. In configuration file I see these two line which are not commented. What is the usage/purpose of the ...
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2answers
951 views

dhcp fails after initial reboot with “No working leases in persistent database”

I just installed ubuntu server 14.04 LTS, overwriting 12.04. The installation appears to proceed correctly. During the installation process the IP and hostname are correctly obtained via dhcp. ...
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1answer
84 views

Web filtering, dhcp, proxies in a distro?

I want to ditch our Dave's web filtering because it blocks anything our dear Gov do not like, but I also want to protect my children from porn. I am thinking I can install a cut down Ubuntu distro on ...
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1answer
115 views

Strange issue with DHCP on Ubuntu 12.10 [closed]

I've configured a new Ubuntu DHCP server (12.10) and it's working fine (thanks to you all for all you help in setting it up). I have a strange issue, and don't know what's going on. I hope I will get ...
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334 views

Unable to add Windows 7 PC as client to samba4 AD DC

I'm new to networking. I'm trying to set up a network at my office which consists of about 15 Windows 7 PCs in the lab. This worked perfectly when I tried with Windows Server (evaluation version). ...
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1answer
397 views

Correct DHCP client configuration

I have two dhcp directories in /etc: /etc/dhcp and /etc/dhcp3 Which one is the correct direcotry for editing my dhcp client configuration? I want to send the hostname with dhcp and so was trying to ...
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51 views

Append DNS Suffix - Wifi vs Physical

So a while back I changed my DHCP config to appended a dns suffix automatically. I modified the.. /etc/dhcp/dhclient.conf ..config file and added the a line.. append domain-name "mydomain.net"; ...
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1answer
117 views

Is it possible to periodically repeat a dhcp request?

I have my ubuntu server set to get addresses from a dhcp server. However, if that dhcp server is not currently active, the server will just stay with no address. Is there some mechanism to ...
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1answer
108 views

inactive enable Wi-Fi

I did some changes on my wi-fi connection to give ip manual and somethings else I do not remember what exactly i did and now Wi-Fi connection is not enable on the menu bar I set my connection again to ...
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2answers
79 views

dhcpserver configuration, please help

I hope I will get help here. I need to configure an Ubuntu dhcp server (12.10), the server has 2 network cards. What I need to do is to configure the server as DHCP to give clients IP-Addresses ...
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2answers
25k views

Unable to set static IP address in Ubuntu 14.04 [closed]

I've never had so much problems setting a network interface card to static addressing. I'm not sure what has changed, but I can only seem to get this thing to work if it's set to obtain the address ...
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244 views

iptables ruleset blocking LAN and WAN

Having problems with your Intel I217-V ethernet port? I suggest you read this entire post. Whilst drivers were not my issue, nor my answer (in the end), this post will still provide useful insight. ...
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482 views

Why dhclient is still running when I choose static IP?

I modify dhcp to static in /etc/network/interfaces (like below). # The primary network interface auto eth0 iface eth0 inet static netmask 255.255.0.0 address 10.10.130.128 gateway 10.10.1.1 Then ...
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Is there a way to set BOOTIF in dnsmasq equivalent to isc-dhcpd?

It would seem that isc-dhcpd sends BOOTIF parameter for PXE booting clients. The initramfs-tools package detects this and uses the BOOTIF variable to determine which interface to set up for the root ...
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2k views

Configuring Ubuntu 14.04 as DHCP with 2 network cards

I am really confused, I installed Ubuntu DHCP server 14.x and trying to get it working but don't know where to start. I've been reading online and there are different versions of doing it. ...
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136 views

Where can I specify init service conf for isc-dhcp-server?

I used service isc-dhcp-server start to invoke the dhcpd. if I do ps -ef | grep dhcp here it is: root@casalab-Latitude-D530:~# ps -ef | grep dhcp dhcpd 6636 1 0 Apr28 ? 00:00:00 dhcpd ...
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Prevent some interfaces from editing resolv.conf

I am trying to connect a camera to the internet. To do this, I have two devices: lte0 and wlan0. The camera (Sony NEX 5) is controlled over wlan0, and lte0 is the LTE connection. My ...
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2answers
638 views

Ubuntu server network autoconfigure failed

I'm novoice Ubuntu server user. Im using Virtualbox to install Ubuntu Server 13.10 While installation process i got message Network Auto Configuration failed I selected Continue Now my server ...
5
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1answer
786 views

What's the correct MAAS DHCP configuration?

I've set up a MAAS controller by following this documentation: http://maas.ubuntu.com/docs1.4/cluster-configuration.html However, when I got to the DHCP configurations I was a little puzzled. The ...
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1answer
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Configuring two half-separate lans using DHCP

I have to set up DHCP that has to assign IPs over 2 networks (192.168.0.0/24 and 192.168.1.0/24). That is easy and I've got it working. The question is, is it possible to make PCs from one network ...
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153 views

Trusty, Lenovo Y500, and Wifi

After a little googling, I was able to install Ubuntu 14.04 on my Lenovo Y500. Grub would not install on /dev/sda (16GB SSD), but installed fine on the spinny disk. I'm using the SSD as the swap ...
5
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2answers
4k views

DHCP and static IP address simultaneously in ubuntu

We can use multiple IP address for a single interface in linux(eth0:0, eth0:1). But can we use dhcp and static IP in the same time?? eth0:1 should have a static IP address and eth0:0 will be configure ...
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161 views

Macvlan interfaces beyond first interface fail to connect.

I've been working on a project to build a set of macvlans on ubuntu. The process I'm using comes from here. In short, I run this set of commands to build and initialize an interface: ip link add link ...
2
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1answer
110 views

How to direct DHCP requests based on IP

I have a home server that I want to make multicast a music stream to my network. I have the server connected to my main network router via WiFi, and I have a switch connected to the server by wire ...