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 with multiple network

I have a problem Ubuntu server 14.04, I want to do DHCP server whit multiple subnet subnet 192.168.0.1 subnet 192.168.1.1 subnet 192 168.2.1 subnet 192.168.3.1 In dhcpd.conf I write subnet ...
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MAAS node refuses IP address assigned to it by DHCP

I am trying to configure MAAS and Juju in a test environment. My MAAS region and cluster controllers are on a single machine with two NICs. eth1 is connected to a LAN with internet access; IP is ...
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How to automate running dhclient (without sudo) when starting a mobile broadband connection?

I use a mobile broadband dongle to connect to the internet but I'm able to download/upload only after executing manually sudo dhclient everytime I turn the connection on from the network manager menu ...
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isc-dhcp-server Failes to restart

I am tasked at school to setup a DHCP server for personal use. After I've set my configs and try to restart isc-dhcp-server i get this Stopping ISC DHCP server dhcpd (fail) Same when trying to ...
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DHCP server won't start. Gives 'Not configured to listen on any interfaces!' even when configured

I have just setup isc-dhcp on my server. I even setup the correct interface. But still the dhcp server won't boot. Its says Not configured to listen on any interfaces! in the syslog. And when I try ...
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How to DHCP IP auto recovery in nagios server on ubuntu

I already install and configure the nagios server on ubuntu. Can I IP configure manually but I want to IP configure automatically. So, I can't it. Given to me one solution please..
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Question about /etc/hosts and my DHCP-assigned address

While reading about Linux I got: You can view your system’s hostname simply by typing hostname with no argument. anupam@JAZZ:~$ hostname JAZZ then I found this: The special hostname ...
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LAN S WITH QNAP TS-412

I have been trying for a while now to get connected to my QNAP TS-412. The device won't connect at all, it can't be pinged and I have the following in /var/log/syslog I had this connected previously ...
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Ethernet stop working after while

I have an ethernet issue, i connect to network but after while it stops forking, to bring it back on, i need bring eth0 down and up. I'm using clonned MAC address if it can by the problem, also I ...
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33 views

Ubuntu 12.04 in a VM as DHCP / Router

Preface: I'm quite noobish Desire I have a bunch of IP phones I want to program using DHCP options 66/160. Our router is just a standard D-link so doesn't handle options. So I figured I would ...
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Ubuntu MAAS 14.04 Cant add nodes

root@spsandboxbl02:/var/log/maas# cat /etc/issue Ubuntu 14.04.1 LTS \n \l Following this guide: http://maas.ubuntu.com/docs/install.html root@spsandboxbl02:/var/log/maas# apt-get install maas ...
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DHCP change requires reboot

I have a static IP set on my web-server. When I change static to dhcp the server needs to be reboot for the changes to take effect. Is there any way to make it so I can use ifdown and ifup to change ...
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43 views

How to create a static wifi with hostapd UBUNTU 14.04?

I am trying to connect my android phone with wifi ubuntu. Things I have tried: 1) ap-hotspot -> , phone stuck in obtaining ip address, then avoided due to poor internet 2) manually configured ...
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Routing internet, resources and other network traffic through two NIC

Say you have two NIC cards and want two different subnets on each card but one gateway to the internet: eth0 192.168.1.1 netmask 255.255.255.0 gw 192.168.1.1 (DHCP and DNS Services) eth0 ...
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Configure Bind9 to search local domain for localhosts first

First a little background.(skip this if your in a hurry) This is a network in a small shop. There is a mix of clients on this network. There are PC's running various versions of windows and linux as ...
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20 views

Network configuration on boot taking longer than 60 seconds… why?

My HTPC was running Ubuntu 13.04 and had no problems, but I've re-formatted the system and installed Ubuntu 14.04 (minimal) from scratch and I've having a problem with my network. When the system ...
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Ubuntu Server low client dowload speed

In the work we have a Ubuntu server 14.04 working as a proxy server, dhcp and Firewall, we assigns the clients Ips Manually in the dhcp for each Mac Address. The most of the clients go out through ...
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Ubuntu MaaS nodes not booting PXE images

I've many nodes on LAN with wake On LAN enabled. I turn them one it tries to acquire IP through DHCP. Then reports No DHCP or proxyDHCP offers were recieved Sometimes No boot filename recieved ...
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45 views

2 DHCP Servers -ubuntu-14.04 and 1 gateway

I’ve got 2 DHCP servers / ubuntu 14.04.they are configured in failover mode (primary/secondary). They work very well but I have the following issue: The primary has got 2 NW-cards, eth0 for ...
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isc-dhcp for Virtual Machines only

I installed Xen 4.3 on Ubuntu Server 14.04 and added the xenbr0 bridge. The host IP is 145.173.136.2. The network administrator reserved 15 IP's for the VMs: 145.173.136.112-126 So i installed the ...
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41 views

PXE based insallation always sets hostname as 'kickseed'

I am using PXE based provisioning of Ubuntu 12.04.5. I have PXE, TFTP, DHCP server in place. All my configurations specified in kickstart file are set correctly except the hostname. The machine always ...
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34 views

How to find IP address lease info using WPA2 Enterprise

I'm trying to find the DHCP lease info for my wifi connection on a network using WPA2 Enterprise and PEAP. I can do this in Windows using ipconfig /all which shows both when the lease was issued and ...
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42 views

How to get default gateway with a dhcp

I have ubuntu 12.04 and I have configured /etc/network/interfaces like this auto eth2 iface eth2 inet dhcp I also have auto eth1 iface eth1 inet static address 60.60.60.1 ...
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Lan party network usage statistics

Me and couple of my friends have decided to make a lan party around 40 to 50 players. I have couple of conserns I need to find solutions for. DHCP server I have now installed a DHCP server (in ...
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144 views

NetworkManager unable to complete wifi connection

When my built-in Ethernet controller died over the weekend, I bought a TP-LINK WN725N USB WiFi adapter. From a laptop, I obtained some firmware and a module from "sensorgnome" because the module with ...
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125 views

static ip in NetworkManager but ifconfig does not show the ip (ubuntustudio 14.04)

i am running ubuntustudio 14.04. I have a development setup where my pc has 2 NICs one of which connects to the internet and acquires dhcp ip from the router, while the other (eth1) is used to ...
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143 views

Configure LXC with additional IP ubuntu 14.04

I'm still looking for answer on my question. I have a dedicated server with ubuntu server 14.04, and 2 public ip. I want to add 1 public ip per 1 lxc. I think i've tried everything and nothing helped ...
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60 views

Wireless DHCP configuration fails on open network

I upgraded to Kubuntu Trusty last summer, and now that I'm back in school, I've noticed that my laptop has been failing to connect to the school's wireless (which is a completely open network). Every ...
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124 views

14.04 Desktop: Static IP is acquired, ping works, DNS does not

My question is very similar to this one: Can ping but no DNS I have setup a static IP on my previous Ubuntu versions - 9.04 and 12.04 - without issue. I have used an identical means this time as ...
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42 views

How to share internet connection and making the client accessible over the lan

I've a Pc with Ubuntu 14.04 connected to a linkys router through wlan0, and I'd like to share internet connection to an AVR with ethernet port. This is pretty simple if only internet connection is ...
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How to make IPv6 duplicate address detection (DAD) work on Ubuntu?

I have an Ubuntu host running inet6 dhcp. This is what I configured on the /etc/network/interfaces file: auto eth1 iface eth1 inet6 dhcp up sysctl net.ipv6.conf.eth1.accept_ra=1 pre-down ip ...
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Static IP breaks Network connection

I am somewhat new to Linux. I am setting up a Web server and installed Ubuntu server 14.04 on an vSphere ESXi 5.5 host. I am connecting perfectly fine to the internet when using DHCP but when I apply ...
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Failover/ gateway issue. Help please

hope someone can help, this would be excellent. I’ve ubuntu DHCP server (10.04), which works great (many thanks to everyone who helped me in this excellent forum). This server has 2 cards, eth0 for ...
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1answer
53 views

winbind not working after upgrading to 14.04 (from 12.04LTS) [duplicate]

Winbind stopped working after I upgraded to Ubuntu 14.04 (from 12.04 following the automatic upgrade prompt). This is on a home LAN with my router providing dynamic IP addresses to my machines. ...
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Only a different subnet and a virtual IP for it seems to work out to access my IP-cam

My Router IP is 192.168.1.1. DHCP-Range from 192.168.1.33 to .64 . My IP-Cam (Hikvision) is set to IP 192.168.1.100. Funny enough I can access the IP-cam only if it is on its factory default ...
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Has Ubuntu some firewall activated by default?

Because I can't seem to connect to my ip-cam. And mnap produces alternating results if I use the cams IP address: Nmap scan report for 192.0.0.64 Host is up (0.00079s latency). Not shown: 991 closed ...
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104 views

iSCSI + br0 bridge + 14.04.1 Server = does not work

On one of my servers I have: USB 4GB: 1) EFI partition 2) /boot partition iSCSI 50GB (on another fileserver): 3) / partition In /etc/network/interfaces it works flawlessly if I have: auto p3p1 ...
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Error in Ubuntu Software Center isc-dhcp-common

Whenever I run the Software Center I get errors. I have have found similar questions on the message board but none of the solutions worked for me. When I run sudo apt-get -f install the result is ...
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68 views

DHCP leases flash of Docker

I've docker container, it uses internal DHCP to assign the IP to its Network Interface. Each time I stop and run the container again, the new IP is assigned, ex: 172.17.0.2, 172.17.0.3, 172.17.0.4 ...
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93 views

Multiple DHCP leases on single interface

If I want to have 2 static IP addresses, I can do something like this: auto eth0 iface eth0 inet static address 192.168.1.10 netmask 255.255.255.0 broadcast 192.168.1.255 auto eth0:0 ...
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71 views

Need to update /etc/hosts every time I connect to network because of dynamic IP

Every time I connect to the network at work my device gets a new IP address which makes it /etc/hosts/ invalid and my hostname becomes unreachable. I was looking for a way to set /etc/hosts ...
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Ubuntu 14.04 Desktop not automatically renewing DHCP lease

Sometimes my laptops networking just stops. I fix it by doing sudo ifdown em1 sudo ifup em1 The strange thing is, in previous releases and other *nix distros that usually doesnt produce an prompt ...
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48 views

Is there a way to statically map MAC addresses to IP addresses for machines in MAAS?

I have few (11) servers in MAAS that will be used for OpenStack deployment. I want to give specific IP addresses to specific nodes in the MAAS. Is there a way to map the MAC address to IP address so ...
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368 views

Setting up DHCP server - fail to start/stop it

I am following this guide. I am completely new to Ubuntu, working on 14.04 LTS. When I reach the last step before dealing with Kerrighed (half way through the tutorial), I try to start my DHCP server ...
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Second virtual interface fails

I'm trying to simulate multiple hosts in my laptop for testing wifi connections with Access Point. Trying to create virtual interfaces using iw command. The file /etc/network/interfaces looks like ...
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Can not apply a static IP address to Virtual PC?

I Installed an Ubuntu 12.04 LTS Server as a Virual Server using Wmware Workstation 10. Unfortunately when I change the DHCP setting to static. The server is unable connect to our network, it works ...
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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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56 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
89 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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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 ...