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

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How to change DHCP Server log location

I have a running DHCP server and I would like to change the location of the log file to /var/etc/dhcpd.log I have found this in the dhcpd.conf file: #Use this to send dhcp log messages to a ...
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No internet connection over cable (but wifi works) [on hold]

I have Ubuntu Desktop 14.04 installed on MSI GT660. I am Linux newb. I can connect to internet using wifi but not over cable. contents of /etc/network/interfaces: # interfaces(5) file used by ...
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issue with dhcp default network file

I'm installing dhcp server on Firewall and under that firewall i setup two clients who ll get dynamic ip addresses. I give static ip address to eth1 port on which i'm installing dhcp server on ...
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Monitoring tool for Ubuntu

I am running a Ubuntu server for NAT and DHCP services in my Office. What monitoring tool can be used to remotely monitor server performance, DHCP lease addresses, IP Lease statistics, monitor ...
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No network in recovery mode

I have some problems with the display, so I need to go into recovery mode to repair that. Now the problem is that I can't get the Internet to work. After I get in the command line as root, I do ...
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Change virtual box ip from 10.2.x.x to 192.168.x.x

I have applications and xampp setup on virtual box with ubuntu 12. The ip address for virtual machine 192.168.x.x but after installing vmware ,ip change for virtual box to 10.2.x.x I want to change ...
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Ubuntu 14.04 with Gnome 3, Network Manager issue

I have been trying to update the network setting of a fresh install via the GUI but am seeing this error: error editing connection: did not find a connection with UUID '(null)' The Network Icon in ...
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25 views

How to MAC-Nat in Openflow/Openvswitch?

I got one simple Question as in the Title ... how can i achieve a MAC-Address-Translation in OpenFlow? I need to capture DHCP Packets that are destinated for the MAC of the public interface and give ...
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Neutron OpenFlow L2 Address Translation Mac help

Like the title says i need help configuring OpenFlow on my Network Node (Openstack). The pain is that the Server Hoster i am using, uses a DHCP-Server that binds IPs to MAC Adresses. Now they say, ...
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33 views

Connect Ethernet network to Wireless network on one computer

I have access to the internet via ethernet port. I've been given a WiFi dongle and a task to implement WiFi access point that devices can connect to and use internet trough the ethernet port. So far ...
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Restricted internet access on 14.04. Teamviewer works, websites don't load

I now know it is not a DNS issue, because I can't even ping 8.8.8.8. I've added the output of tracepath 8.8.8.8. My machine running the most up-to-date version of 14.04 Trusty. The mobo has two ...
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(Neutron Openvswitch) bridge cant obtain dhcplease

I am trying to bridge my external network ... for that i have to give my eth1 (external) 0.0.0.0 and the bridge the public ip. after that i start dhclient br-ex ... dhclient tries to find an offer ...
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51 views

Configure dhcpd to listen on a bridging interface only for ipv4

I am trying to achieve the following behavior of the dhcp server. a) I would like the dhcp server to listen only on a particular interface. In this case the interface is a bridging interface ...
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39 views

Wifi shared through ethernet cable [To Raspberry Pi]

I have a laptop connected to wifi. I would like to connect my Raspberry Pi to it with an ethernet cable and have access to internet thanks to the laptop connection. The laptop runs Ubuntu 14.04.2 LTS, ...
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34 views

KVM Bridge DHCP - Connection on Host drops - Same IP address for br0 and eth0

I'm trying to create a bridge for a vm in Ubuntu 14.04. My original /etc/network/interfaces file looked like: auto lo iface lo inet loopback auto eth0 iface eth0 inet dhcp And after modifying it, ...
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Cloned server cannot connect to network

I have set up a server running Linaro 12.07 (based on precise). I installed avahi-daemon so that it can resolve hostnames of my other machines. It's network connection works fine and connect to other ...
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How to stop network manager changing my gateway?

Environment: Ubuntu 14.04 Problem: I want to connect to my VPN at work from home. Whenever I connect to my wireless, my route is set up to the work route. The home gateway is supposed to be ...
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IP Address of Shared WiFi Client

Rather than buy a wifi card or run a very long cable I dedicated an old netbook to share it's wifi connection with a PC via ethernet. Both machines are running 14.04. I had no problem setting it up ...
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how to set default gateway in dhcpd6.conf

IPv6 dhcp server would like to set default gateway for all clients. For ipv4 it can done by adding option routers <gateway-addr> inside subnet. But what needs to be added for ipv6 configuration? ...
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How to configure dynamic DNS for IPv6 using bind and isc-dhcp-server

I have a ubuntu 14.04 LTS machine created in VirtualBox which I could configure IPv4 delegation via isc-dhcp-server. Then by follow this great tutorial, I could configure such machine to also update ...
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Equivalence of dhcpcd -T on dhclient

Is there any equivalence of 'dhcpcd -T' command on dhclient?
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Ubuntu Server 14.04 eth0 loads not load after 1st updates

I have a fresh install of Server 14.04 running on an old Dell OptiPlex 755 MT. It automatically connects to my network and I can reach it through SSH without an issue. I also made sure to edit the ...
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Obtaining automatic IP with network-manager fails, but static works with wicd

Update I've connected to my home router with wicd and a static IP. Thus, the problem seems to be that my laptop cannot get an IP address automatically. Hence, the main question now is: How can I get ...
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1answer
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Ubuntu Server | Gateway: 0.0.0.0

I am trying to setup an Ubuntu Server (non-graphical). However when I try to assign a Static IP address to the device instead of the default DHCP -- the system keeps telling me that the gateway is ...
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MAAS remote cluster controller as name server

Following my success with the setup of a remote MAAS cluster controller (see Issue with MAAS cluster controller, installation fails) I have a problem with name servers. Basically the question is how ...
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Restarted MaaS cluster, systems unaccessable

I build a cluster with 14.04 LTS, MaaS and juju. We had a plant shutdown, so I shutdown the cluster using MaaS/Nodes I selected all, then in "Bulk Action" I selected "Stop Selected Nodes" and clicked ...
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List of available networks disappears after 15 seconds Lubuntu 14.04

When I boot lubuntu 14.04, running on my Dell 11 chromebook, if I click on the network manager applet in the panel it lists the 8 or so networks in range. After roughly 15 seconds, all the networks ...
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side effect between isc-dhcp-client, network speed and lightdm

I have 300 computers on running on 14.04 64bits Ubuntu, i use isc-dhcp-client to get ip and name from my dhcp server. I encounter the classic problem with lightdm "your system is running in ...
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102 views

Why do I get IP 10.42.0.1 when plugging in an Ethernet cable?

For a few months I have the problem on my Ubuntu 14.04 box that when I plug in my Ethernet cable into, I get the IP 10.42.0.1 assigned instead of getting an IP via DHCP. I can fix this problem ...
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47 views

Configure DHCP on Ubuntu 12.04 to share internet to subnet

I'm well aware of the plethora of documentation on setting up NAT and a DHCP server in order to share internet to a LAN. Here are a few articles that I think are getting me close, however I still ...
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52 views

No internet access after system update

So I've just install some various updates that shows up. After system reboot I've lost internet access... Please help me with this :( I'm using kubuntu 14.10 on VirtualBox Network Adapter 1 is ...
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Setting up network for two places with different static IP addresses by script

I have a Raspberry Pi 2 and I'd like to use it at home and at work. At home it could get a DHCP address or a static address 192.168.2.x but at work it must get the static IP address 10.10.34.122. I ...
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Static IP v.4 LAN Suddenly Lost Connectivity

Suddenly, on June 15, our static IP v.4 wired LAN lost its Internet connectivity. This is a wired LAN, each device with a static IP v.4 address behind a router, and has worked flawlessly for ...
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Broadcast ubuntu router on network connections

I have configured my ubuntu server to become a router. It has a network of 10.1.10.0. How do I broadcast this network for devices to see it as a choice for a network connection?
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isc-dhcp-server and compiz?

I'm facing a very strange problem. I'm using Ubuntu 14.04 LTS. Everything is normal until I install isc-dhcp-server. When it's installed, my desktop becomes abnormal. All strings (file/folder names) ...
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25 views

Make ubuntu server/router part of wifi connections

So I have configured my ubuntu server to be router with dhcp functionalities and I want it to appear on other computers or devices as a choice for a network connection. My ubuntu router is currently ...
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45 views

Ubuntu server router network connections

Is it possible to make the ubuntu router part of the network connections so my device can connect to it and the ubuntu router can assign an ip address via dhcp. I have already configured my ubuntu ...
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33 views

Ubuntu server as dhcp router/firewall

I have properly configured the ubuntu server to have dhcp service and firewall rules. I also placed some firewall rules for testing. I just do not really know how to test it on lets say another ...
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70 views

DHCP IP Address / sub interfaces

I've setup a DHCP server for about 120 sub networks and it's working very well, it gives the right IPs from the right subnet / VLAN. The server listen to Eth0 which has the IP 192.168.111.20 and all ...
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How to create local DHCP server to give addresses to bridge ports?

How to create and setup local DHCP server(dnsmasq) via terminal to give addresses to bridge ports? For example I have bridge br0 and need to give some address to tap interface that connected to br0. ...
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100 views

Unable to setup a pxe server on Ubuntu VM (Virtual Box)

I am bit new to this and trying to setup PXE server on Ubuntu 14.04 VM using Virtual Box 4.3. For this I have followed following link for my installation: PXE Boot Server Installation Steps in Ubuntu ...
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14:04 Server: dhcpd/bind9 - (Static IP) Clients no longer have connectivity to external hosts

After following the linked guide from a fresh install of 14.04: http://blogging.dragon.org.uk/dns-with-bind9-and-dhcp-on-ubuntu-14-04/ I made an addition to /etc/dhcpd.conf so that I had a group of ...
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ubuntu isc-dhcp-server expected ip address or hostname

I recently replaced my windows server with an ubuntu one and I was setting up dhcp when I ran into this error whilst trying to add a 'reserved' client. expecting IP address or hostname Jun 6 ...
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25 views

Server Network DHCP Fail Kills Interfaces

I have a server with the current /etc/network/interfaces: auto lo iface lo inet loopback auto em1 iface em1 inet dhcp auto em1:1 iface em1:1 inet static address 192.168.168.1 netmask ...
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1answer
63 views

How can I connect my PC connected to WiFi on wlan0 to my oscilloscope on eth0?

Here is how I set up my network configuration on both devices For Linux comp: wlan0: WiFi Link set to DHCP eth0: Static IP: 192.168.1.254 Netmask: 255.255.255.0 Default Gateway IP and ...
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dnsmasq giving out IPs in the static range

I have the following in my dnsmasq.conf: dhcp-range=set:red,10.1.1.2,10.1.1.69,72h,static dhcp-range=set:blue,10.1.1.70,10.1.1.100,72h,static dhcp-range=set:white,10.1.1.101,10.1.1.200,12h ...
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How to fix my local ip address [duplicate]

I want my private IP address 192.168.xxx.xxx to be fixed and do not change, Is it possible? I am using Ubuntu 14.04. I need it to work even when I change the network? Thank's
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69 views

DHCP for multi netwok

I hope I well get help as I got always in this excellent forum. We have over 120 networks (192, 172 and 10 ranges)and at the moment our DHCP server is windows server 2008, which I would like to ...
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201 views

OpenVPN doesn't connect on Ubuntu, but works on windows

Cannot deal with openvpn connection. It works on windows, but on Ubuntu linux 15.04 script end 'Initialization Sequence Completed' and unaccessible .local resources. I checked many links and answers, ...
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Firefox/Clementine only use eth0 as gateway but not eth1

hy! I have two nics, that are configured via dhcp, internet is reachable via both: 1) 192.168.15.x gateway 192.168.15.1 2) 192.168.1.x gateway 192.168.1.1 Sometimes 1 is down via the firewall (as ...