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

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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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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 ...
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Unable to connect to wired DHCP connection via my PC?

Hi As I upgrade my pc to ubuntu 11.10 I can't connect to the wired connection ! It doesn't even find my Device MAC address !!What can I do ? ifconfig -a eth0 Link encap:Ethernet HWaddr ...
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Waiting for network configuration message at boot, then blank screen

When I boot (11.10), I get the message that it's "waiting for network configuration" and then the same, but "60 seconds longer" and then finially it "boots" but to a black screen. No cursor, just ...
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How to connect wirelessly in a cafe with 11.04

Wireless works fine at home. However, at a cafe I am not able to browse Internet or ping 72.14.204.105. I am able to connect wirelessly at cafe and ping router: 192.168.1.1. Route includes: default ...
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Why using DHCP service?

A few simple questions for a total beginner: 1)Why use DHCP? I am running a small home-network: 1 desktop computer and twp lap-tops. What is the big advantage in DHCP for me? What configurations does ...
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697 views

Lost wifi connection since i connected ethernet cable

I've had trouble at my office using wifi. The thing is, the wifi network is totally seperate from the office LAN, and i've got to be on wifi if i want to use protocols like ssh or git. I configured ...
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How to override the DHCP-provided nameserver?

I (think) that I've configured a static IP address in /etc/network/interfaces: # The primary network interface auto eth0 iface eth0 inet static address 10.1.1.2 netmask 255.255.255.0 ...
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Adding additional DNS search domains when using DHCP

How can I add additional DNS search domains to a network connection which is configured using DHCP? At work, we have several sub-domains (test.example.com, dev.example.com, etc), and I've grown tired ...
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How can I setup dhcpd (dynamic DNS)?

I have a Ubuntu Server 11.04 firewall/gateway set up and I'm wondering how I can configure isc-dhcp-server to update bind9 to resolve hostnames in the network. Here is my setup: 3 computers ...
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How do you change udev rules without restarting (e.g. to change eth1 to eth0)?

TLDR; How do you apply changes to /etc/udev/rules.d/70-persistent-net.rules without restarting? (See this documentation about ethernet interface logical names.) Long version: I have a bootable USB ...
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No internet access when using a PPTP VPN server

I've followed the tutorial on this site: http://forums.bit-tech.net/showthread.php?t=132029 I have a DD-WRT router with Micro-FW that does not have a built-in VPN server. I have port forwarded the ...
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how to switch from automatic dhcp to manual setting of the wireless network

When waking up from sleeping my netbook (ubuntu 11.04) is very fast (less than 10 secs). However most of the time building up the wlan connection takes 30 secs. Somewhere I read, that setting your ...
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Check if IP is static or dynamic programmatically

I'm trying to determine whether my IP has been statically or dynamically assigned in Ubuntu 11.04 from within C. The closest I've come is examining /var/lib/dhcp/dhclient.leases, but that doesn't ...
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Accidently Deleted /usr/lib/*.so.*

While I was installing MRTG, by mistake I have deleted /usr/lib/*.so.* and /usr/lib/*.so I am now unable to boot-up my system now, it gets stuck at the splash screen and when I press PAGEDOWN button ...
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1answer
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Network Interfaces Do Not Function When Ubuntu Is Installed On An Asus 'Striker Extreme' Motherboard

I am attempting to install Ubuntu Server 10.04 LTS on my computer. This computer is based around an Asus 'Striker Extreme' motherboard. I can install Ubuntu, but the machine cannot connect to the ...
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Can't get ipv6 address using dhcp

I can get the ipv4 address using dhcp,But can't get the ipv6 address. the dhcp server also support the ipv6 service. ifconfig eth0 eth0 Link encap:Ethernet HWaddr: 00:21:85:d3:a3:36 ...
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can the hostname changed via DHCP?

According to several comments in the web most DHCP clients simply ignore the hostname provided by the DHCP server. Does Ubuntu use the provided hostname? If not, how can Ubuntu be persuaded to use the ...
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1answer
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Domain name isn't assigned from DHCP when booting from Live CD

I downloaded the ubuntu 10.10 ISO image for AMD64. When i start the ISO ubuntu gets an IP address from my DHCP server. NetworkManager updates /etc/resolv.conf according to the DNS config provided by ...
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1answer
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Enabling DHCP without being connected

I was installing Ubuntu server the other night and I was not able to hook up to the network while installing because I don't have a monitor for my desktop machines. I had to go into the living room ...
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Firestarter and DHCP Failing via Wireless [closed]

I recently installed Firestarter to implement a firewall for my server - an Ubuntu 10.04 installation. Now, when ever a wireless connection attempts to connect and get an IP address via DHCP, it fails ...
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How to setup dhcp3-server to advertise the DNS server the server itself has got from DHCP? [closed]

The Ubuntu 10.04 server has eth0 Internet interface configured by means of an ISP's DHCP. At the same time the server has static eth0 LAN interface to which it provides masquerading (NAT) and ...
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dhcpd offers ip address but client doesn't get ip

I set up a dhcpd on my ubuntu server with this configuration: please note that the ubuntu server which runs the dhcpd has a static ip of 192.168.1.50 default-lease-time 600; max-lease-time 7200; ...
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Why is dhclient saying: “SIOCSIFADDR: Permission denied”?

I have encountered a very weird error on ubuntu-server (8.04), I have no idea why dhclient is not allowed to set the network settings! I'm not the one who installed the server in the first place, so i ...