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

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Ubuntu keeps reconfiguring my network

I'm configuring a "network", between two computers(both with ubuntu 12.04), using a crossover cable and assigning all ips by hand. When I set up an interface, with IP netmask etc, everything works, ...
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DHCP is mangling my PTR records in DNS

I originally posted this in LinuxQuestions http://www.linuxquestions.org/questions/linux-server-73/dhcp-is-mangling-my-ptr-records-in-dns-4175412344/ without much luck, so I'll try here. DHCP is ...
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DHCP not working on new install

A new Kubuntu 12.04 install is not getting IP addresses from either the wired connection nor from any wireless connection. The cables / router ports / wifi adapter / access point are all known good ...
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3answers
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How does dhclient get called under 12.04

In my 12.04 Precise install, when I boot the system, or when I plug in an ethernet cable, dhclient isn't run automatically on my wired eth0 connection. I have no running dhclient daemon. When I run ...
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1answer
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I try install dhcp3-server, but /etc/init.d/dhcp3-server file is missing. Whats going on?

I've found several how-to's that essentially go through the same process in setting up DHCP. Here's a link that has the list of step needed install and setup DHCP. I follow all the steps and find ...
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1answer
8k views

How to define default gateway with multiple DHCP interfaces?

How does ifconfig determine which network interface to use as the default when DHCP assigns a default route for each NIC? It seems like it's in a race-condition and I need to have a more reliable ...
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4answers
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How to make dhclient forget its last DHCP lease?

What I'm trying to achieve is to get cold-start, zero-state DHCP lease which means forcing dhclient through the full discovery and configuration process (DHCPDISCOVER–DHCPOFFER–DHCPREQUEST–DHCPACK as ...
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2answers
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testing dhcp server locally on one physical machine with virtual machine

I'm writing simple program to configure and monitor DHCP server on my Ubuntu 12.04. What I'm trying to achieve that my physical machine will be DHCP server and my VM (virtual machine) get one lease ...
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Unable to set default gateway on a hosted Windows virtual server

I'm running Ubuntu server via Hyper-V and have successfully installed it but seem unable to ping the server or ping any other machines on the network from the server. After doing a bit of reading ...
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Having set up a DCHP server, what do I need to do for the rest of my network?

I've got a Raspberry Pi arriving any day now, and I intend to use it (amongst other things) as a DHCP server. Currently we have a few devices on our network to which we would like to assign static ...
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why do none of my local servers resolve

When I try to ping or browse using a web browser certain domains names that we host on our local network, it does not work. Yet dig, nslookup correctly return their details. What do I need to do to ...
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108 views

How do I connect to available networks from the command-line?

More accurately, how do I tell Ubuntu to obtain an address using DHCP for all the network interfaces it finds (which do not require a password)?
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3answers
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How do I configure a DHCP server?

How to configure a DHCP server in Ubuntu 12.04? I need a step-by-step tutorial if somebody has one.
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1answer
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What is the difference between dhcp3-server and isc-dhcp-server packages?

What is the difference between dhcp3-server and isc-dhcp-server packages in ubuntu 12.04?
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1answer
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Wired network connection fails after installing Ubuntu 12.04

Having installed 12.04 amd64 desktop from the alternative ISO (I'm using LVM on a RAID5 array), my networking fails after booting into the installed system. It works fine on the 12.04 Live CD and ...
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2answers
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Ubuntu 11.10 dhclient-enter-hook.d scripts not invoked

I have a box with Ubuntu 11.10 installed. And the box was configured to get IP and hostname from dhcp. We have set to scripts in /etc/dhcp/dhclient-enter-hooks.d/ folder. But these scripts were not ...
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2answers
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How to add some additional DNS search domains without ignoring the ones returned by DHCP?

Please provide: correct location to add my custom domain search option (preferably appending it to the DHCP list, instead of prepending) command to run to make the settings effective Note: do not ...
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1answer
417 views

DHCP server doesn't assign network dns to other hosts on my network

I had a problem with my DHCP but I managed to fix it. Now the network starts but I have a problem with DNS. Clients in the network don't get any dns from my DHCP. My network works as follow my I ...
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251 views

Connect to dhcp printer server

Hope someone can help me. Knowing that on Windows, what I do is to open Windows explorer and tape \\srv-dhcp. How to do the equivalent on Ubuntu? Thank you for your help.
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Can't connect to internet using DHCP and cable modem

I'm new to Linux but liking it so far. My symptom is that I have a machine which dual boots WinXP and Ubuntu -- internet works on WinXP, not on Ubuntu. Some specs: Ubuntu 11.10; AMD Athlon 64 ...
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4answers
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resolv.conf doesn't get set on reboot when networking is configured for static ip

I'm experiencing what appears to be a name resolution issue in Ubuntu 12.04 Server edition when configuring my computer to use static ip. In /etc/network/interfaces: # The primary network interface ...
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2answers
430 views

Internet doesn't work by default

After upgrading to Precise, I am required to run 'sudo dhclient eth0' in a terminal in order to get the internet to work. Everything worked perfectly fine on Oneiric, so It's really puzzling me. I'm ...
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1answer
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Is it possible to use Ifconfig to switch an interface to DHCP and if not, what is the best way?

I have just set up a new Ubuntu server and I am going to be doing a lot of networking tests. During setup, I simply skipped the network step. I now need to switch between DHCP and an address quite ...
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3answers
707 views

problem loading internet pages

I have installed ubuntu 11.10 and when on firefox i can get onto google or google earth and even gmail.But it wont connect to amazon or ebay or bbc or itv homepage.It only seems to like google I have ...
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611 views

Dynamic Bind9 + DHCP

i have been working on setup a server for my internal network, so far i have a working isc-dhcp-server that can upgrade a chrooted BIND9 (on the same machine), i need to add some static entries on the ...
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DHCP server not routing to connect to internet for clients

i am configuring a DHCP server using ubuntu 11.10 with 2 lan cards.eth0 is connected to wan on ip address:192.168.2.2/24 and eth1 connected to lan is configured with ip:192.168.10.1/24 ...
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1answer
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PXE Boot Server stalling with “File not found” error

I'm trying to setup my Ubuntu 10.04 Server to allow PXE booting for the clients in my lab. I have configured the DHCP settings and everything, and I boot up my client, and it sits at a screen similar ...
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How to make an internet server as firewall using ubuntu 11.10

i have one static broadband connection which is coming to my Ubuntu server with 2 lan cards, there are 10 more PC's to which i need to provide internet connection through Ubuntu server as well as i ...
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How do I download and install dhcpv6 on my server using Ubuntu?

I've downloaded dhcp3 on my server and I now need the server to assign ipv6 addresses. Also what is stateless autoconfiguration and how do I use it on my server?
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255 views

Server 11.10 to be used as a DHCP server

I am trying out an ubuntu server in my home network and I am planning to use it as a dhcp server. Since ubuntu is installed in a desktop with just 1 Ethernet port my question: Is it possible to ...
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1answer
743 views

aufs Root File System On Usb Flash

I configured aufs as a Root File System On Usb Flash Drive by this article. So the first brunch is real root FS and it is read-only. The second brunch FS is in memory and it is read-write capable. ...
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1answer
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Is dhclient.conf used during boot when bringing up network interfaces?

I am running Ubuntu 11.10 32bit Server on a single-board computer. I want the option of using the Ethernet interface (eth0) as a backend to control the computer if it's connected. I'm also lazy: if ...
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How to get hostname from DHCP server

I want Ubuntu to get hostname and DNS name from DHCP client. Default installation of 11.10 does not do that. Update: same question asked and Unsolved
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602 views

How do I replace a cable modem router with my own server as DHCP?

My ISP gave me a really crappy router-modem-combination that lacks basic features. For instance you can't assign a constant ip to the mac adress of a client PC. I run a server for my home ...
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0answers
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Problem obtaining IP address when connecting to Linksys E4200 with DHCP Reservation established [closed]

I am having difficulty acquiring an IP address when running off my Ubuntu partition and attempting to connect to the Cisco Linksys E4200 wireless router via wireless which is using DHCP reservation ...
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1answer
319 views

Problem with DHCP Server in Ubuntu Server

when I restart the DHCP server, these are the messages that I get from syslog Feb 10 19:17:50 mustafa-sr1 dhcpd: All rights reserved. Feb 10 19:17:50 mustafa-sr1 dhcpd: For info, please visit ...
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1answer
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Set up eth0 network interface using DHCP in initramfs

I created my own initramfs script (based on live-initramfs) and I need set up network connection (using DHCP) to get remote file. So what do I need to add to initramfs hook file (ifconfig, ...
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2answers
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How to enable DHCP server to all subnets for PXE server?

I have setup-ed a PXE boot server for installing ubuntu via network. Currently i am using hosts mac address to install the ubuntu operating system. I would like to enable the DHCP server in all the ...
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838 views

Python script to check if current IP address is from DHCP or static

How to check if eth address is taken from DHCP or set manually (static) using Python?
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How to set up a DHCP server?

I am currently at this stage of setting up DHCP, and id just like to know what this output in terminal means? I know I have to edit a file but I do not know which one, and I do not know what to put in ...
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1answer
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How can I set the installer to use my NFS server instead of a mirror while PXE installing?

I'm trying to deploy ubuntuer-10.04 server with a pxe server. Now the problem i've encountered is that the netboot initrd/kernel image wants to load ubuntu through a mirror and not through my nfs ...
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139 views

Installer looks for a CD while attempting a network install via PXE/NFS [closed]

I'm trying to set up a PXE/NFS server which will automatically deploy Ubuntu 10.04 Server (32-Bit), now i've set up dhcp and tftp and the client loads the bootloader from the pxe server. Now i choose ...
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1answer
732 views

DHCP server only works one time

I installed e configured the DHCP server and removed all network-manager*. All my settings are just like this one: dhcpd fails to start on eth1 (but i use eth0) I do: sudo ifdown eth0 sudo ifup ...
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1answer
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DHCP + Static IP for DHCP server on eth1?

I'm trying to set up an intranet using DHCP. I'm using Ubuntu 11.04 and a ZyXEL GS2200-24 managed switch. I installed dhcp3-server. Here is my configuration for DHCP (/etc/dhcp/dhcpd.conf): ...
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1answer
621 views

How to set up static IP for DHCP server

I would like to set up a DHCP server on Ubuntu 10.10. How can I give it a static IP? I know this question is not very specific--I would like just you to point me in the right direction.
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1answer
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No client internet access when setting up these iptables rules

I have read many other posts but cannot figure this out. eth0 is my external connected to a Comcast modem. The server has internet access with no issues. eth1 is internal and running DHCP for the ...
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How can I set up a Dynamic DNS fetching service on Ubuntu Server?

I've created accounts and hostnames within my http://no-ip.org/ account, which is by far the most commonly used service for my type of server. Can somebody walk me through the configuration process ...
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1answer
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How do I setup DHCP-Server interfaces so they are mapped/bridged to each other?

I have recently setup a DHCP-Server on an Ubuntu 10.04 server machine. The machine has two interfaces (eth0, eth1). I have the DHCP server setup correctly because computers connecting to the network ...
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1answer
530 views

Is it possible to setup a DHCP server only for local virtual machines?

I have a quick question. I have a bunch of virtual machines (VMWare Workstation) running on an Ubuntu server and have found that VMWare NAT (DHCP) service is unreliable and slow. I have to use NAT ...
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How can I configure Mythbuntu 11.10 to wait for a DCHP lease before completing boot and starting network dependent apps?

I have a clean install of Mythbuntu 11.10 acting as a frontend only. It is networked using eth0 and I have a router acting as a DHCP server on the same subnet. The frontend boots and automatically ...