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

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ssh backup host [duplicate]

I have a pc called MONKEY, when MONKEY is connected to the lan of my network it has ip address 192.168.1.101, when MONKEY is connected to the wlan of my network it has ip adress 192.168.0.107. Now in ...
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Use Ubuntu Server to create a WiFi acces point

I have configured my Ubuntu-Server as a WiFi acces point following this instruction: http://wiki.ubuntuusers.de/WLAN_Router?highlight=dnsmasq I can connect and authenticate. But I don't want't ...
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Sharing Internet Connection (DHCP) through a Wireless Hotspot

I have an internet connection through a cable modem. The IP address on the cable modem is not static and is perhaps obtained through a DHCP mode. I wish to share this internet connection through ...
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30 views

How to edit resovle.conf on my own?

I am doing all the networking manually. For example, if I want to connect to a network using DHCP I change the dhclient script file then I read my script then add the ip's using IP command. It all ...
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56 views

Internet connection and external access with two Nics 12.04

I have just set up two nics in my ubuntu 12.04 server. I have eth0 and eth1 both configured to use DHCP. eth0 is connected to my router and the router has access to the internet. eth1 is connected ...
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357 views

Mininet problem in allocating IP address

I have encountered a problem in Mininet. The eth0 is allocated to NAT in Mininet and has a certain IP address to connect to the internet. But when I define a host only adaptor, the IPv4 is allocated ...
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5k views

How to reserve IP Address in DHCP Server

I install DHCP Server with https://help.ubuntu.com/lts/serverguide/dhcp.html but I need to make reserve IP addresses for specific machine (192.168.1.XXX) and further to assign a name to each machine ...
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129 views

DHCP Renewing every 1 second in 13.10

I've upgraded to Ubuntu 13.10 by doing a brand new fresh install then update and noticed that in /var/log/syslog I'm continually getting messages like: Dec 8 02:44:15 running-shoe dhclient: ...
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46 views

ubuntu 10.04 DHCP server upgraded and now severe problems

We have an Ubuntu server at work. It acts as a DHCP server for 5 machines connected to a private 172.x.x.x network for internet access. The machines netboot from an image on the server. I tried to ...
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23 views

Where do find IBM T42 Type 2378 IP address?

I have an IBM T42 type 2378 FZU. When I was installing Ubuntu non-pae, the network auto configuration DHCP protocol failed. I didn't know my IP address? How do I find it? Thanks.
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ibaton router light goes off when lan wire put it on.no internet on wired but there is internet in wireless

i have installed ubuntu 12.04 server LTS. and installed xubuntu desktop. on pentium 4. 512 mb ram.and my router is i baton frm bsnl internet.my prob is when i start the desktop pc the lan wire ...
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141 views

Automatic WiFi startup

I would like to do the following - Bring up wlan0 at boot. Start wpa_suplicant with the specified command line options once wlan0 is up. Run dhclient -nw wlan0 once wpa_supplicant has associated ...
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367 views

Can't resolve local hosts

To start with, my Linux or networking knowledge is fairly basic, so it's probably best to assume that I know nothing. I've been trying (for my own furtherance) to put together some sort of home ...
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50 views

GSM does not work: DHCP instead of PPP?

I built an Erricson GSM device into my ThinkPad and am trying to get it work on Ubuntu. The GSM network is functional with Windows, so the hardware is working and and APN and credentials are correct. ...
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1answer
120 views

Ubuntu 12.04 LAN settings after changing ISP and modem : The Network Path was not found !

There is probably a very simple answer to this but it has me stumped. I have a Ubuntu 12.04 machine on a windows LAN. Previously I could find the shared folders on the system by using ...
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80 views

What should be the proper dhcp configuration for creating a ntwork over eth0?

Even not under a real server like scenario, I'm testing with dhcpd for learning and practice purposes. I'm using Ubuntu 12.04 LTS. I want to offer a network by my eth0 interface. I receive ip and so ...
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2answers
1k views

configure dhcp server in Ubuntu 13.10 and other version?

salam (Hi) What is the difference between install / configure dhcp-server in Ubuntu 13.10 and other versions? I see a video about configure dhcp-server in Ubuntu 12 but I can't configure it in ...
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206 views

408 error in browser using Google or openid on some networks in Ubuntu [duplicate]

I have searched here and the web and many other people have similar issues going back a few years (My Google Account not working properly with Ubuntu for example), but no one seems to have fixed it. ...
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123 views

DHCP client issues with 12.04

I have 14 x Dell c6100 servers running ubuntu 12.04 Lts. They have been running fine for a year. The systems are updated regularly. But now if reboot they fail to get a IP from the DHCP server. In ...
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DHCP Server handing out IP's not in range

DHCP seems to giving out IP's that are not in range for VoIP phones. When I release the ip address on a WinXP machine it comes back with an IP in the range of 101-252. The VoIP are another story. ...
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1answer
1k views

DHCP for multiple subnetworks with one NIC

I am trying to run DHCP server on Ubuntu 12.04. I need to configure several pools (different sub-networks) using one interface card. So I have configured below: sudo nano /etc/network/interfaces ...
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100 views

Ubuntu 12.10 won't use dhcp static lease from my router

I have a Buffalo router running dd-wrt (came stock from the factory with it). I have a DHCP static lease setup for my computer which dual boots Windows 7 and Ubuntu 12.10. When running Windows, there ...
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2answers
666 views

How to assign unique MAC addresses to sub-interfaces

I'm in a corporate environment with a DHCP server with static assignments for my server. I have one physical nic with several sub-interfaces. I statically assign different MAC addresses for each ...
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1answer
831 views

Why fixed address assigned to DHCP server doesn't work?

I have an Ubuntu server that runs DHCP server. DHCP server works good normally, but when I want to assign fixed IP address for my clients, it doesn't work. My codes in dhcp server in dhcpd.conf look ...
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132 views

Two ip address for a one mac address

Can Isc-dhcp-server give two static ip addresses to one mac address? I have several home terminals in my network. Each terminal have two interfaces. One for public traffic and one for a management ...
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DHCP Fails To Start

I just installed Ubuntu 12.0.4 on an HP 8560 laptop. I installed Fog version 29 and everything worked just fine except the DHCP3 package failed to start. When I run the install command it says DHCP3 ...
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765 views

How can I stop sending my hostname via DHCP?

Ubuntu sends my computer's configured hostname to any DHCP server it tries to use. How do I stop it from sending a hostname?
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841 views

isc-dhcp-server not starting on ubuntu13.10

I'm trying to set a DHCP server on 13.10. I installed: sudo apt-get install isc-dhcp-server My configuration files look like this: /etc/default/isc-dhcp-server INTERFACES="eth0" ...
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284 views

WiFi not connecting on linksys e1200 with DHCP reservation

I am having difficulty acquiring an IP address when running off my Ubuntu (13.10, but used to happen on 13.04 too) partition and attempting to connect to the Cisco Linksys E1200 wireless router via ...
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1answer
123 views

What IP address does Ubuntu assign itself when it cannot reach a DHCP server?

When Windows is attached to a network but cannot reach a DHCP server, it defaults to an IP address of the form 169.254.XXX.XXX. Does Ubuntu do something similiar?
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2k views

Thin Client Lubuntu over PXE Server with DHCP and TFTP

I have 10 old computers (like thin clients) without HDD. So i decided to use Lubuntu as Operating System. In my work we have a PXE server with DHCP and TFTP, they built a debian distro before and for ...
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MaaS dhcp cannot be detected at node installation

I am installing a MaaS Ubuntu 12.04 by ISO with virtualbox as the host machine. I have a problem on the cluster management during the process of adding the node. The node cannot detect the dhcp ...
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1answer
195 views

Ubuntu networking - DNS/DHCP

How to configure Ubuntu 13.04 as my DNS (Domain Name Server) and DHCP server for other Linux client machines? Master server ip configuration- ip address: 192.168.200.100 gateway: 192.168.200.1 name: ...
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1k views

Ubuntu Server Static IP Problem

Hi I've been trying and trying to chang emy ubuntu servers IP to static so I can have people join my Minecraft server that I have set up, I've been working on it for 2 days straight with no luck, when ...
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1answer
439 views

domain-name dhcp option not applying to hostname -f

My Ubuntu 12.04.3 machine is not getting the domain-name option from dhcp applied to the FQDN returned by hostname -f (dnsdomainname returns nothing). Ip config: # ip a 1: lo: ...
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1answer
1k views

wicd Failed: Unable to get IP address

I have an old laptop (Thinkpad T30) and I have installed lubuntu 10.04 on it. NetworkManager could see the available wifi but the bottom was gray out. It seems that it is an unsolved-bug in wifi and ...
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2answers
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Why is my network broken, although my computer has an IP address, and firewall disabled? [closed]

Short summary (added after the problem was solved) Apparently some wireless USB network adapter drivers were incompatible with my Linux OS, and in the end I worked around the problem by buying a ...
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2answers
2k views

How do I override an MTU provided by DHCP?

I'm running Ubuntu Server 12.04 LTS, and I want to override the MTU my cable company provides via DHCP. They provide an MTU of 576 and I want to use 1492. I can change it with ifconfig, but it ...
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1answer
247 views

Website access only with ip

I recently installed Linaro Ubuntu 12.04 on my cubie development board and I can access websites only with ip adresses, for example I can access google with 74.125.224.72. I also can ping only ip ...
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308 views

Dependency Problems while installing isc-dhcp-server

I'm a newbie in the Ubuntu world. As a result, I'm having some problems with my Ubuntu 12.04 LTS. I have an Android device which I want to connect to my Ubuntu. To make this possible, I am trying to ...
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1answer
2k views

How can i give internet access to local network via DHCP/Gateway server?

I think i now find myself somewhere between cognitive overload and like a babe lost in the woods. Thus i hope someone out there can assist me! :) I setup a Ubuntu 12.04 server on my home local ...
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2answers
10k views

Networking stop/waiting error

I wanted to set up a bridge connection for my VMs (I am using KVM). I modified my etc/network/interfaces file and its contents are: auto lo iface lo inet loopback auto br0 iface br0 inet dhcp ...
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208 views

Running openvpn with dhclient without messing up name resolution

I connect to an Openvpn server that requires me to set up the tap interface with dhclient after establishing the connection. I run and exit dhclient like this: /sbin/dhclient -nw -v tap0 ...
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1answer
90 views

Limited or no connectivity on windows clients

here's my scenario Using ubuntu server non gui, I would set up a server with static IP on eth0 then share the connection on eth1 -> connected to a network switch. i did set up eth0 as static, ...
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0answers
238 views

How do I perform maintenance on a master DNS/DHCP (BIND9/ISC-DHCP) Ubuntu server?

I'm running non-GUI Ubuntu Server 12.04.2 LTS (64-bit) on my 2 DNS/DHCP servers. Both servers are running BIND9 9.8.1-P1 and ISC-DHCP-SERVER 4.1.ESV-R4-0ubuntu5.6. Please note that for DNS I'm ...
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1answer
850 views

Virtual Box guest (Windows7) in Ubuntu 12.04 (host) not connecting to the internet.

Have a Virtual Box running Win7 inside an Ubuntu host - the guest does not connect to the internet, but the host does. It is using an intel pro/1000 MT Desktop adapter with settings set to ...
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2answers
9k views

Can't set DNS with Static IP

I'm running Ubuntu 13.04. I uninstalled DHCP. I set my IP address to 192.168.1.200 and it's working just fine. I can connect to it via my other internet network machines. However, I've tried to ...
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1answer
1k views

Changing/Setting DNS settings on boot

I have a situation where i do not give access to a machine, but there may be circumstances where the IP settings need to be changed. I have overcome this by providing a USB stick with a file with both ...
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1answer
230 views

Ubuntu 13.04: Ethernet works at office but not at home. DHCP issue maybe?

I am fairly new to Linux and just installed Ubuntu 13.04 on an external USB HD (using the liveCD). The computer the drive is connected to is a Dell Precision M4500 (laptop). After the fresh install, ...
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1answer
241 views

How to send DHCPD leases to remote syslog-ng

I want to query a DHCP server for logs about leased IP’s every 5 minutes. I am not sure how to run the query from my server or which file to edit. The queried logs will be sent to the server ...