DHCP is an auto configuration protocol used on IP networks.

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What is the simplest way to connect to wireless on a Debian system with nothing but essential?

I have a Debian Jessie system which, for reasons unrelated to this question, has nothing installed but the set of essential system packages. What is the simplest method for connecting to a wireless ...
5
votes
4answers
3k views

Maintaining `/etc/hosts` for hosts on DHCP

On my local DHCP network I have different PC's that I need to access remotely. Problem is that their IP's change. Sometimes I plug my laptop and netbook into other people's DHCP networks. My current ...
3
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3answers
3k views

Configure multiple interfaces with different hostnames using DHCP and DNS

I have a machine running Ubuntu 12.04 Server with two interfaces connected (eth0, eth1) to the network. Our network is set up so that a FreeBSD based DHCP server hands out leases and registers the ...
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1answer
976 views

Pxeboot: Client not getting ip address from the DHCP Server

I am Working on Pxeboot. I have a Ubuntu system as KVM and in that system I installed Virtual machine manager. I also installed Ubuntu in the virtual machine. Before I start my virtual machine, I ...
2
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2answers
627 views

keep losing IP with dhcpcd

I have an Arch Linux install in a VirtualBox VM, and as I'm working all of a sudden, it will lose it's dynamic IP address. When this happens, if I check on the status of the dhcpcd service it says ...
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1answer
24 views

Debian stuck in Endless DHCPNAK/OFFER loop unless I ask DHCP server to clear expired leases

have a Marvel Kirkwood device running Debian with 3.16 Kernel. On boot, the DHCPClient gets stuck in a loop and never picks up an ip unless I log onto the dhcp server and ask it to dump the expired ...
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1answer
71 views

Bridge does not get IP via DHCP at boot

I'm running CentOS 7. I'm not running NetworkManager, and I've actually uninstalled it. My system is supposed to acquire an IPv4 address via DHCP on br0 at boot. Howver, when I log in, it has no ...
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0answers
11 views

No DHCP OFFERS on several PCs in same network

I have different PCs and 2 of them don't get an IP-address (because they don't get a DHCP-offer) by the ISP, while the others do. I pluged them directly in my cable-modem, one after another. But when ...
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2answers
7k views

Unable to set hostname for use within network

I am having a lot of trouble setting up a hostname for my home server for use within my home network. My home server is running Ubuntu 12.04 LTS and all packages are up to date. Management of this ...
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1answer
37 views

How can I have a bridge that uses DHCP?

I have set up a linux box (centos 7) to use for virtualizing some servers. I have set up a bridge, but I need to do it with DHCP, but it doesn't seem to like it. The reason I need DHCP is because ...
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1answer
587 views

Network fail on FreeBSD: Ping to router fails, but router believes computer is connected

I have a TP-Link TL-WN851N wireless adapter, which is based on an Atheros device. When I attempt to connect to my WPA2 wireless network, ifconfig wlan0 tells me that the connection is 'associated'. My ...
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4answers
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Docker + Bridges + DHCP

I have a lot of docker containers that I need addressable on the the same LAN as their hosts. Up until now, I have been achieving this by using setting up a bridge and manually assigning them IPs, and ...
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votes
4answers
604 views

Automatically acquire new IP address in new network

I'm running a Centos virtual machine on a laptop using a bridged network connection to avoid double-NAT issues, with the address assigned via DHCP. This works fine until I move the laptop to another ...
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votes
3answers
17k views

Why are my two virtual machines getting the same IP address?

I have two virtual machines both running on a Linux host (Fedora 16). I set both adapters as attached to NAT. When I boot them up they both have their default gateway set to 10.0.2.2. They also ...
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3answers
54 views

what is dhcpv6-client service in firewalld, and can i safely remove it?

In a CentOS 7 server, I type in firewall-cmd --list-all, and it gives me the following: public (default, active) interfaces: enp3s0 sources: services: dhcpv6-client https ssh ports: ...
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1answer
672 views

PXE boot chaining to hardcoded TFTP server?

My existing network environment provides the following: DHCP server that sends PXE clients to a particular TFTP server TFTP server with SYSLINUX "pxelinux.0" file for booting The SYSLINUX ...
2
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1answer
1k views

DHCP IP lease attempt failed over ethernet and dhcp with netctl

My dhcp ethernet works fine in Windows but not in Arch Linux with netctl and dhcpcd. What am I doing wrong? Output of "ip link" 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state ...
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1answer
39 views

Auto-population of /etc/resolv.conf not working?

I am using Raspbian with a static setup in /etc/network/interfaces. I have read from multiple credible sources that the /etc/resolv.conf file is populated by other software on the system, commonly ...
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1answer
116 views

DHCP Kali Linux

I'm using VBox. I have got a Bridged Adapter. I need to get my network working. What I can already do is to set everything up manually, I mean: ifconfig eth0 192.168.1.33 netmask 255.255.255.0 route ...
6
votes
1answer
133 views

What overwrites /etc/resolv.conf on every boot?

I was given the files for a mini linux, that boots directly into firefox. It works for all it should be doing, only that I do not get an internet connection. We have 3 DNS servers in the network, ...
2
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2answers
188 views

Why can't I start isc-dhcp-server upon installation?

I'm following this tutorial to install Linux in a system that does not have CD reader nor USB boot capabilities. Eventually, I reached the point where I had to install isc-dhcp-server and I did, sort ...
2
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2answers
426 views

How to configure dhcpd to register ipv4 with bind while having static ipv6 addresses?

I have IPv6 configured on my local network via radvd; it advertises a routable IPv6 block, that all the machines auto-configure.s I have IPv4 assigned to a NAT'd block via dhcpd and that updates ...
2
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1answer
466 views

Is it possible for DHCP to assign different IP addresses to the same machine?

I have installed and configured a DHCP server on my CentOS 6.5. It works properly and assign IP addresses to the clients machines on my network, and as I noticed when a client reconnect the DHCP ...
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3answers
2k views

DHCPv6 prefix delegation server for linux?

What linux DHCPv6 client can I set up so it requests a prefix on one interface and then on all the other interfaces it will give out addresses (or if requested, a smaller prefix delegation)? It would ...
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0answers
32 views

How to use dhcpd on two network interfaces?

I have an embedded system that has Ethernet and wifi. I want to setit up in a way that it provides IP to both interfaces. The system uses BusyBox. and I an new in this area. can you provide a sample ...
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1answer
54 views

dhclient took minutes to get an IP

For some reason my mini-computer had no IP address, so I performed sudo ifdown eth2 followed by sudo ifup eth2. What followed was a 5 minute grudge match of my client fighting the server to see who ...
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2answers
24k views

Setup static IP in redhat 6

I installed Redhat 6 x86_64. I am using the Network connection screen to set a static IP address like below (I want two PC's in my house to see each other: one Redhat PC and one Mac) 192.168.0.5 ...
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1answer
69 views

How to know DHCP options value on debian/ubuntu and other linux

How to know all DHCP options and values (on the client side, Linux Ubuntu / Debian / ArchLinux ) provided by the server. I need to pass non-standard option to the client by the DHCP option code ...
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1answer
112 views

Arch Linux: Should I keep the dhcpd service if I'm using connman?

Running systemd-analyze blame tells me that dhcpd.service is running. I remember enabling this in order to get automatic Ethernet connection back when I was installing Arch. Now I installed connman ...
3
votes
1answer
43 views

dhcpd does not allow filename option with a colon in it

For some reason, tftpboot does not work with a colon in filename parameter: group { filename "node7:linux/pxelinux.0"; host machine_7a { hardware ethernet 02:01:02:02:01:11; ...
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2answers
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Command to list assigned dhcp addresses

Is there a command I can use to ask the dhcpd server which addresses have been assigned?
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1answer
274 views

How to force network to wait for DHCP with systemd-networkd?

I'm using systemd-networkd to configure my interfaces: [Match] Name=enp3s0 [Network] DHCP=v4 It works quite well except that at boot, some services are not waiting for DHCP to finish. For ...
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63 views

pptp and openvpn clients dhcp from server

I would like the following: Ubuntu server with PPTP server and OpenVPN server and a DHCP server Ubuntu clients all with the same PPTP username and OpenVPN client certificate. Client connects to ...
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0answers
35 views

Testing DHCP range; multiple addresses per interface

I set up a DHCP server; I have a range defined, for ~1k hosts. Is there a way to test all the addresses? This is the first time I have a task like this and I would like to know what will happen when ...
0
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1answer
32 views

Is it possible to suggest an IP to my DHCP server for my client to use?

Is it possible for a DHCP client on Linux to suggest an IP to a DHCP server? I have no access to the DHCP server. I cannot use static networking, or DNS will not work. (DNS on my network is set up ...
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0answers
78 views

How do you prevent a DHCP release during shutdown?

I am currently using Ubuntu 14.04, but expect this to be applicable for different distros. I would like to prevent a DHCP release during shutdown, and opt for either the lease to expire or for a DHCP ...
0
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2answers
453 views

Can ping Debian VM via IP but not via hostname

On my work's network, my new debian headless VM is not visible via its hostname. I'm using: Debian Jessie Virtualbox bridged adapter I can see other VMs on my machine from the headless VM, and I ...
2
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1answer
212 views

Wifi not working

I just dual-booted windows 7 with Debian 7, during the installation it said the wifi firmware was missing so I installed without an internet connection, after the installation I got my LAN cable to ...
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1answer
2k views

Location of dhclient.conf

I need to check the client DHCP settings, which I expect to be in the file /etc/dhcp/dhclient.conf, but there is no such files there. What is the location of this file in RHEL 6, on 64 bit?
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1answer
7k views

How to auto generate resolv.conf on Centos 6.5

I just installed CentOS 6.5 and configured the following files: /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 HWADDR=aa:bb:dd:dd:ee:ff TYPE=Ethernet UUID=adfddfaf-9sda-adse-dfs4-asdfsdfdfg97 ...
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votes
4answers
4k views

Fedora 20 - wifi hotspot almost work but something wrong

I have a Sony Vaio notebook with WiFi, and need to setup a hotspot (an ad-hoc one) under Fedora 20. I successfully did it under Debian and SuSE, but under Fedora I am struggling to understand the ...
3
votes
1answer
461 views

Specifying DNS settings to override those of DHCP

Every 6 months or so I cannot access the DNS on whatever router I'm using. usually have to add the nameserver by hand to the /etc/resolv.conf file. I've tried adding Google free DNS to the file and it ...
3
votes
1answer
352 views

How to setup wireless AP with two wifi cards and ethernet as WAN on debian?

I'm trying to build wireless AP with 2 Atheros cards (AR5413 / AR5414 both), and one ethernet card to act as WAN. I am also having doubts if I should use ath5k or madwifi drivers. I've tried both ...
3
votes
1answer
306 views

Spoofing or removing DHCP client hostname in response to DHCP server

In linux, when my machine requests an IP address it also sends the hostname back to the DHCP server. How can I stop my machine from sending back this hostname? I use dhclient, possibly via ...
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0answers
58 views

ISC DHCP Server - A Client's Uplink Is Not Working

Running a DHCP server, client(s) does not have up-link (0Mbps) and has a downlink (50Mbps.) I am setting up a gateway/router on a PC running Debian Wheezy with ISC-DHCP. I have 1 WAN (eth0) and 2 LAN ...
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0answers
124 views

why is dhcpd listening on udp port 38053 and udp6 port 40572?

I am running a dhcp server with dhcpd from isc and thought it should only be listening on port 67. Why is it also listening on those other ports? I cannot seem to find what those ports are for, but ...
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1answer
95 views

DDNS (dynamic-dns) setup and adding a hostname to a device (to be visible on the network)

How do I provide a fixed Hostname to my device so that a netscan can shows up the device name across all platforms? How can I reach the device using the hostname/MAC-ID (something which is fixed) ...
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1answer
296 views

Setting up a gateway between two subnets on the same physical network

I need to configure a DHCP-enabled network (192.168.2.) on a physical layer where resides an already existing network (192.168.1.) with static IPs. I have a Debian 7 server with two interfaces (server ...
2
votes
2answers
15k views

Debian dhcpd “No subnet declaration for eth0”

I am trying to set up a pxe boot server on a Debian 6.0.3 Squeeze machine that gives images of PLoP Linux. I was following a tutorial from ...
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votes
1answer
1k views

dhcpcd can't startup at boot

when I run dhcpcd after boot everything works fine but when I try to add it to auto start systemctl enable dhcpcd@eth0.service, after each boot it's inactive dhcpcd@eth0.service loaded ...