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

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Can I run a Ubuntu and Windows DHCP / DNS Server together in the same network?

I am just wondering if I can run both windows and Ubuntu DHCP/DNS Server in the same LAN. The Present configuration is Windows 2003 Server AD and Ubuntu DHCP n DNS Server with BINDS. I have proposed ...
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1answer
395 views

ISC DHCP: Unsupported device

I am trying to run ISC DHCP on my wlan1mon device which is in monitor mode. But i get error: systemctl status isc-dhcp-server.service ● isc-dhcp-server.service - LSB: DHCP server Loaded: loaded ...
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1answer
35 views

Networking issues with strange setup

I'm having the hardest time getting web access to a server. I have a machine running Linux Mint(host) and another running a Ubuntu server(client). My host machine has internet access from a DHCP ...
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1answer
53 views

Wi-Fi access point not supplying IP addresses to clients

I created a wireless AP with hostapd with configuration saved in a file called hostapd-test.conf. When I run the file with sudo hostapd ~/hostapd-test.conf I can see the AP by scanning for Wi-Fi ...
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0answers
29 views

Web server & ICMP question

Im am very new here in askubuntu.com and pretty new to ubuntu server system. at our church we have a ubuntu control server which is in charge of internal network(DHCP) and all that related. the ...
2
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1answer
17 views

Static IP in a VirtualBox VM that's “mobile”

I've seen the great answers on configuring a static IP in Ubuntu. My challenge is that I've got a VM running on my laptop for use in doing demos where the router and gateway addresses change ...
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0answers
113 views

How to show the reserved leases that dhcp has on file?

I want to check on the reserved leases (called "fixed-address" in the config files) of my dhcpd. To get all the info about the free dynamic ips is no problem, but the reserved one that get written to ...
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24 views

DHCP error is reported, but DHCP works fine with all other machines on network

I am trying to install Ubuntu for the first time, and wish to use the network install option. I downloaded mini.iso and made a bootable USB drive with it. This booted correctly, but when I try to ...
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32 views

Export / save DHCP.CONF and Interfaces files as text

I would like to save/export the DHCP.conf and Interfaces content to a text file. Is this possible? and if yes, how should I do it? I need to do this as I've configured 2 DHCP-servers (failover mode) ...
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1answer
139 views

Virtualbox static IP to windows VM on ubuntu host

I am trying to setup a windows VM on Ubuntu host using Virtual box. Since I would be running a SQL server database on the windows VM I am trying to setup a static IP on that VM. In order to do that I ...
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0answers
604 views

Can't start dhcp server

I'm trying to follow the tutorial How To Create An Evil Twin Access Point (with WPA/ WPA2 Capture). Everything worked except I get stuck at 20:51 at the command: dhcpd -cf /etc/dhcpd.conf -pf ...
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23 views

Ubuntu Server Not Booting After Changing DHCP Settings

I'm currently running an Ubuntu Server with 14.04LTS at home. I've recently had issues with the network and wanted to set the server to a static IP address internally. To do this I followed the guide ...
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81 views

Ubuntu ramdisk template

I've been working on a ramdisk template for running a complete root filesystem on the RAM of a baremetal server(over IPMI so no physical access) that boots over PXE. I used debootstrap to create an ...
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1answer
34 views

Change the DHCP range for LXC without changing physical interfaces

I am trying to change the DHCP range of my LXC containers. By default , ow addresses given by the dhcp are 10.0.3.X. how can I change this range so my containers can have IP in the range 10.0.2.X. PS: ...
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1answer
30 views

how to cilents gets ip addresses during booting time via dhcp server

i have installed dhcp server and working fine. when I open terminal on clients side they got the address. but the problem is that when i boot the cilent machines they didnt get dynamic address dnot ...
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1answer
103 views

configuring dhcp with dynaminc ipv4 and ipv6 address

i just want to know that is that possible to configure dynamic ipv4 and ipv6 address on eth1. i tried ipv4 is working but ipv6 doesn't. if yes then how. If not then what should i do. Because i want ...
0
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1answer
59 views

Is this normal MAAS DHCP behavior?

I believe I've setup the Ubuntu MAAS cluster controller correctly and it's configured to use managed DHCP & DNS (maas-dhcp & maas-dns). Seems to work reasonably well but I'm seeing the ...
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2answers
108 views

How can I cut the mac address out of DHCPDUMP?

I am trying to use dhcpdump to recognize people logging onto my home network and give them a tailor made greeting using a credential file. I cannot get the mac address out of the results of dhcpdump. ...
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45 views

DHCP-Server issue-DHCP-SERVER IP

I’ve setup 2 new DHCP servers (failover mode) with about 120 VLans. Everything is working perfectly a part from 1 thing. The main (physical) interface (eth0) has the IP 172.16.1.11/24 and all other ...
2
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1answer
70 views

No internet connection over cable (but wifi works) [closed]

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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1answer
18 views

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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1answer
39 views

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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206 views

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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0answers
83 views

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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609 views

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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109 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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26 views

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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1answer
73 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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1answer
208 views

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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0answers
55 views

(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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719 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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675 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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212 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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0answers
24 views

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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0answers
80 views

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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47 views

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 ...
2
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1answer
706 views

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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0answers
271 views

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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16 views

Equivalence of dhcpcd -T on dhclient

Is there any equivalence of 'dhcpcd -T' command on dhclient?
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1answer
399 views

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 ...
2
votes
2answers
280 views

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
161 views

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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22 views

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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0answers
31 views

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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44 views

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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50 views

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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1answer
519 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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121 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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1answer
74 views

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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22 views

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 ...