The tag has no usage guidance.

learn more… | top users | synonyms

0
votes
1answer
152 views

ifup cannot bring up eth0 after upgrading to 16.04

I've upgraded my server from 14.04 to 16.04. I can see following error on syslog: ifup[478]: Internet Systems Consortium DHCP Client 4.2.4 ifup[478]: Copyright 2004-2012 Internet Systems Consortium. ...
1
vote
0answers
37 views

Can I force dhclient to use the client identifier from /etc/network/interfaces

I'm using Ubuntu 12.04 LTS with isc dhclient version 4.1. My goal is to use DHCP to get IP addresses for multiple sub-interfaces on eth0. I have three stanzas configured for that in my ...
0
votes
2answers
45 views

How to force dhcp client to allow a self defined domain name

I'm configuring a 14.04 lts server without network manager installed. I set in /etc/dhcp/dhclient.conf: send host-name "os-vps276.projet-okinawa.org"; supersede domain-name "projet-okinawa.org"; I ...
0
votes
0answers
31 views

client DHCP configuration : No DHCPOFFERS received

I worked on this architecture of network ! Why are no DHCP offers received?
0
votes
0answers
43 views

dhclient bound to recorded lease even if no DHCP server is availabe

My Ubuntu machine is connected to switch and switch is connected to DHCP server(router).Now whenever DHCP server is down but link is available through switch it tries DISCOVER multiple times. But ...
0
votes
0answers
107 views

Internet Networking not working unless dhclient is run manually

Edit: Please note, this problem is caused from a broken package, and is talked about more in another post. If you need a quick fix to temporarily get back the internet to fix the problem, I recommend ...
1
vote
1answer
84 views

DHCP IP address changes automatically

My Dell precision M4800, running Ubuntu 14.04 LTS, periodically changes its IP address. It looks like the DHCP lease expires and for some reason it gets a new IP adress instead of renewing the old ...
0
votes
0answers
21 views

Read code plug before client send dhcp discover

I have a program that reads in the code plug external pins to determine the desired IP address of a particular device. This program will then update the /etc/dhcp/dhclient.conf file with the correct ...
0
votes
0answers
19 views

dhcp default behavior

Ubuntu 15.04 (but I think that the question may be also "relevant" with previous and may be following releases) When I start my laptop, the initial dns/resolv conf looks like : # Generated by ...
1
vote
0answers
108 views

ubuntu 14.04 LTS change dhclient lease file location

I cannot find how to change dhclient lease file location. By default (and currently) it is in /var/lib/dhcp, but I want this file to go to another place. I did ps ax | grep dhclient and got this ...
1
vote
0answers
91 views

How do I configure DHCP client to use the “routers” option as well as the “rfc3442-classless-static-routes” option?

The DHCP server on my network sends the following options: option routers n.n.n.n; option rfc3442-classless-static-routes ...; But the DHCP server is (incorrectly?) configured to send the actual ...
0
votes
0answers
178 views

How can I disable dhclient on veth interface in Ubuntu 14.04?

On Ubuntu 14.04 I use an application which dynamically creates/removes veth pairs from the code using system() command. What I see is that the dhclient is started for each new veth pair created where ...
0
votes
0answers
17 views

Equivalence of dhcpcd -T on dhclient

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

Internet wired connection holds only few seconds/few requests before needing to call dhclient again

I have a dual boot ubuntu/windows 8, everything was working fine, suddently, after a reboot from the linux partition, the DNS resolution seems to be in trouble : I have to run dhclient before each ...
8
votes
1answer
8k views

How can I reload dhclient without restarting network?

I am using ubuntu 14.04 on ec2 instance, I am changing dhcp settings as part of the provisioning process, and I cant find a way to reload the dhclient. Infact, theres no way to restart network on ...
0
votes
1answer
1k views

Correct DHCP client configuration

I have two dhcp directories in /etc: /etc/dhcp and /etc/dhcp3 Which one is the correct direcotry for editing my dhcp client configuration? I want to send the hostname with dhcp and so was trying to ...
0
votes
1answer
254 views

Is it possible to periodically repeat a dhcp request?

I have my ubuntu server set to get addresses from a dhcp server. However, if that dhcp server is not currently active, the server will just stay with no address. Is there some mechanism to ...
2
votes
2answers
938 views

Cannot access local hosts by name, but can by IP address

I'm new to Ubuntu and a novice in networking. I cannot access the hosts on the local network by name from my freshly installed 13.10 (no GUI) server. It is not configured as a DHCP server. I use a ...
0
votes
1answer
1k views

dhclient.conf supersede stanzas ignored

I'm putting the following lines at the top (also tried the bottom) of my dhclient.conf file: send host-name "hostname"; supersede domain-name "my-domain-name" supersede domain-search "my-domain-name" ...
0
votes
1answer
536 views

Is network manager called from an /etc/init.d script?

I want to run a script to set the hostname on a heavy customized liveUSB version of ubuntu 10.04 (customized means I'm not ready to update to latest version) I need the script to run before the ...
1
vote
2answers
3k views

Problems running dhclient

After running apt-get upgrade and restarting an Ubuntu Server install I noticed the computer didn't have a network connection. I checked ifconfig ~$ ifconfig lo Link encap:Local Loopback ...
1
vote
1answer
4k views

How to start dhclient at boot?

Here's the problem: root@home:~# ping 8.8.8.8 connect: Network is unreachable root@home:~# dhclient eth0 RTNETLINK answers: File exists root@home:~# ping 8.8.8.8 PING 8.8.8.8 (8.8.8.8) 56(84) ...
1
vote
1answer
736 views

Many dhclient processes running?

Is it OK to have many dhclient processes running? Or is this an error and you should always have one such a process? What does it mean? Why is it listening? Is this computer a DHCP client or is it a ...
0
votes
1answer
78 views

how do I get dhclient to start when I login and start as root?

I've messed up my ubuntu. I uninstalled something that network-manager depended on and now I have to start the dhclient manually every time I log in. I've got a script that does the sudo dhclient eth0 ...
7
votes
1answer
11k views

How do I turn off avahi-daemon on boot? [duplicate]

I just switched from Windows 8 to Ubuntu 13.04. I installed UFW GUI interface for the firewall. In the listening report it shows the something called dhclient and avahi-daemon running in a few ports. ...
2
votes
1answer
4k views

Regenerate resolv.conf from dhclient.conf without releasing/renewing IP?

When I make changes to dhclient.conf such as modifying the DNS search path (so that the changes don't get lost on reboot or DHCP renews), how do I regenerate /etc/resolv.conf? That page suggests ...
1
vote
1answer
3k views

eth0: PACKET SNIFFER(/sbin/dhclient [duplicate]

Im new to Ubuntu and would like help please, I ran ProShield and got this error - eth0: PACKET SNIFFER(/sbin/dhclient I ran the following programs below and nothing came up as far as I can see. ...
2
votes
2answers
9k views

How to force dhclient to run?

I usually run with eth0 config'd statically from info in /etc/network/interfaces, but sometimes need to use a dhcp acquired config. Running dhclient just tells me it's now an upstart job and suggests ...
1
vote
2answers
4k views

internet issues after upgrading to Ubuntu 12.10

I upgraded to Ubuntu 12.10 using update manager. After the upgrade, the wifi gets connected but would not display any webpages. If I ping 8.8.8.8 or google.com, there is response. I managed to fix ...
4
votes
2answers
6k views

How can I automate a root command after (not during) startup?

I'm using Ubuntu 12.04 LTS, but I need to run the following command: sudo dhclient after startup to acquire a stable ethernet connection. I am running dhclient during startup already, through the ...
1
vote
3answers
9k views

Two “search” entries in resolv.conf

I am using 12.04 and have a problem with my resolv.conf There are 2 search lines there. But I can only explain one. I would like to get the other one removed. carsten@myubuntubox:~$ cat ...
0
votes
2answers
544 views

Internet doesn't work by default

After upgrading to Precise, I am required to run 'sudo dhclient eth0' in a terminal in order to get the internet to work. Everything worked perfectly fine on Oneiric, so It's really puzzling me. I'm ...
1
vote
1answer
3k views

Why does dhclient <interface> return a services related message?

I'm trying to use dhclient to set up a tether with dhclient, which worked in 11.04. However, upon upgrading to 11.10, I get the following message when trying to use it. Rather than invoking init ...
3
votes
1answer
435 views

Sify broadband dialer client fail to install

A few days ago I tried to migrate directly towards ubuntu 11.04,but find it difficult,because my internet connection doesn't works as it depends on sify dialer login GUI program provided on windows. ...
4
votes
2answers
7k views

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 ...
8
votes
5answers
12k views

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 ...