DHCP is an auto configuration protocol used on IP networks.

learn more… | top users | synonyms

2
votes
1answer
99 views

dnsmasq - different subnet by wifi SSID - how?

I'm using dnsmasq on an ubuntu 14.04 server as my DHCP and DNS servers on my LAN. This device has only 1 ethernet NIC. I want to setup a wireless Access Point with multiple SSID's. The wifi AP and ...
0
votes
1answer
191 views

dhcpcd failed to start

I installed Archlinux before 2 or 3 days. The weird internet connection was working fine until today, the dhcpcd fail to start. When I type systemctl status dhcpcd@eno1.service it says timed out, ...
1
vote
1answer
52 views

DNSMASQ on Ubuntu in VM not offering leases to client

I have Ubuntu running in VMWare workstation 12. I have a USB ethernet adapter which appears as eth1, and is statically assigned 192.168.0.10 My dnsmasq.conf is: port=0 domain-needed bogus-priv ...
2
votes
1answer
77 views

Using ifplugd with a dhcp server

I have a desktop and a laptop each with a wireless and wired (eth0) network adapter running Arch Linux. The wireless network(s) that I am on prevents the laptop from seeing the desktop. What I would ...
0
votes
1answer
370 views

On switching from NAT to bridge, have network issues in kali 2.0

Found few similar questions but none of them are answered so re-asking a similar question. I have a vmware 12, have kali 2.0 latest installed. First I try on NAT it works great but when i switch to ...
0
votes
0answers
6 views

reset of a ubiquiti networks power ap - no love

Had to reset our ubnt power ap. It's on fiber, and should pull ip via dhcp. no pppoe weirdness here. even so, it cannot grab an ip. all cables are connected. tried mtu 1500 and 1492. I have ssh access ...
0
votes
1answer
57 views

Redhat DHCP Server issues IP by not validating mac address

I have kickstart setup on a Redhat satellite server. On the dhcp server, I added a redhat1 to be kickstarted; while the redhat1 getting built, the dhcp server issued redhat1's IP address to a unknown ...
1
vote
0answers
56 views

wlan0 inteface hosting DHCP is asking itself where it is

I set-up Raspeberry as WiFi router: eth0 on one side, and wlan0 on the other side. My wlan0 interface is hosting a DHCP server. But every minute, it asks itself where the DHCP server is. How could I ...
0
votes
2answers
6k views

Can't install isc-dhcp-server on Kali 2.0

I'm using Kali Linux version 2.0 and I want to install the isc-dhcp-server package in order to practice on an evil twin attack but unfortunately I wasn't able to do that. I used this command: apt-get ...
0
votes
1answer
78 views

OpenVPN clients cannot share their connection to the Internet

Context: a Wifi VPN gateway (Linux Ubuntu computer) Simply One distant Server (www.example.com) and One Client (Paul, Ubuntu Linux, gateway) linked with openVpn. Server allows Paul to ...
2
votes
1answer
94 views

Set static IP when DHCP server is unreachable

I can configure RPi for DHCP client. But when the DHCP server is unreachable, I want to set specific IP. How can I configure dhclient for this?
0
votes
0answers
28 views

Virtual nics and dhcp testing

I need to conduct some testing and want to create 2 virtual network interfaces in Linux and bridge these to a physical nic. I need to test sending specific dhcp client parameters to a dhcp server on ...
0
votes
0answers
53 views

OpenVPN “breaks” my local DNS down

Context: Router-computer (Ubuntu 14) runs a wifi AP (wlan0), as a router between clients and Internet (on eth0). For DHCP it uses isc-dhcp-server and DNS resolvers are defined in ...
0
votes
0answers
89 views

My dhcp client isn't getting the dns server address

I have a network with diskless booting(tftp,pxe,nfs), the clients are working(receiving ip,gateway,etc), but they don't receive the dns address, what it can be? this is my dhcpd.conf: ...
2
votes
3answers
421 views

Trying to get Ethernet working in Linux

I just installed Fedora 22 alongside Windows 10 on my desktop and I've been trying to get the Ethernet to work for a long time. There is no wireless and this is my only source of internet connection ...
1
vote
0answers
231 views

isc-dhcp-server [ok] and running but doesnt seem to work at all

I am attempting to create my own Wireless Access point with compatible hardware and software. Running cmd service isc-dhcp-server start and service hostapd start on my Raspbian box returns Running ...
1
vote
0answers
35 views

Is the ordering of blocks within /etc/network/interfaces important? if so why?

I am using raspbian and have came accross a problem when using isc-dhcp-server . The problem seems to arrise when I change the ordering of the blocks within my etc/network/interfaces file For ...
0
votes
1answer
449 views

isc-dhcp-server conflicting with /etc/network/interfaces - Multiple instances match the same subnet

I am running Raspbian and trying to run cmd service isc-dhcp-server start. This returns the msg [FAIL] Starting ISC DHCP server: dhcpd[....] check syslog for diagnostics. ... failed! my ...
0
votes
1answer
99 views

Debian ssh Cannot Resolve Hostname on DHCP Server

I used to connect to my raspberry pi via ssh using the hostname of the pi and vice versa. Now that doesn't work. I can connect by using the ip address, but that changes daily and it is annoying to ...
1
vote
1answer
222 views

DHCP server with static IP not resolving hostnames (clients do)

Network Setup I have a server which I am trying to set up LXCs on I am using LXD which forces me to use DHCP DHCP is working fine already due to my setup I need to be able to access the containers ...
1
vote
1answer
61 views

What module in the kernel that inform the DHCP client to start DHCP negotiation?

DHCP client is a process instead of kernel code. How the DHCP client know when to start sending DHCP discover message? Is it the IP module in the kernel that inform the DHCP client?
0
votes
1answer
195 views

How to get new ip using dhcpcd

I'm using 64-bit ArchLinux and dhcpcd. How to retrieve new IP using dhcpcd? I've tried to restart the daemon, the IP address i got still the same $ ifconfig enp3s0: flags ... inet xxx ... $ sudo ...
0
votes
0answers
22 views

Unable to connect to internet after assigning fixed IP via DHCP

I've setup my RaspberryPi(NOOBS) as WiFi router by following online guides. Yep, I'm running hostapd and isc-dhcp-server on it. I directly plugged in RJ45 cable provided by my internet provider in to ...
0
votes
1answer
177 views

BusyBox : dhcp client seems to cause NFS mount to stop working

I have a BusyBox based embedded Linux system, mounting the RFS via NFS. This works fine except when I try to use udhcpd to get a DHCP address for eth0. This then causes the NFS mount to stop ...
6
votes
3answers
522 views

How to skip DHCP if no cable connected to ethernet in Debian

My Bananian Linux is wasting time at logon trying to get a DHCP lease for eth0 interface which is not connected. Well, the extender cable is connected to it, but nothing is on the other end. I have ...
1
vote
1answer
74 views

Networking fundamentals: what IP is assigned a NIC if there is no successful DHCP negotiation?

On Windows computers, when there is no DHCP server found on the network interface, it gets assigned some IP address like: 169.254.x.x So it is supposed you can find it on the network using tools ...
0
votes
0answers
157 views

Wifi Hotspot dnsmasq no DHCP ACK

I am creating a Wifi hotspot with hostapd and providing DHCP/DNS through dnsmasq. When a client connects to the Wifi hotspot it is subsequently unable to obtain an IP address through DHCP. The ...
0
votes
0answers
83 views

ArchLinux - DHCPCD timed out during dual boot installation from USB

I am trying to install a Dual Boot ArchLinux with Windows 7 running already on my machine. I have succesfully "burned" ISO on my USB using Rufus. After botting up, I manage to access Live ...
0
votes
1answer
153 views

Problems setting up Ubuntu Machine as a router

I have been at this for over 24 hours, here is what I have so far. -I have an Ubuntu Server running version 14.04.2.amd64, called SV-01 -SV-01 has two NICs. ETH1 is for the external network (goes to ...
0
votes
2answers
448 views

Disable DHCP without altering 'interfaces'

I have a bunch of RPis running in read-only filesystems that are not able to modify the /etc/network/interfaces file. As of right now, they load their configurations off of a USB stick and use ...
2
votes
1answer
491 views

Arch Linux: Despite ot static ip configuration I get a DHCP address

This is very strange to me. On my Raspberry Pi running the latest Arch Linux I disabled all the DHCP service on ETH0 and everything else DHCP: rm /etc/dhcpcd.duid pacman -R dhclient pacman -R dhcpcd ...
0
votes
1answer
69 views

dhclient equivalence of 'dhcpcd -T' command

In dhcpcd, there is an option -T which is declared that:"Test case, when dhcpcd goes through the DHCP negotiation sequence but doesn't actually configure the interface." I would like to do the same ...
0
votes
0answers
59 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 ...
1
vote
0answers
96 views

How to trigger dhcp4-change using nmcli?

I am working on a networking script which will do certain things, e.g., interface up/down/dhcp4-change events happen. I also need to generate these events through Network manager, not through ...
0
votes
1answer
107 views

in freebsd add DHCP IP as an alias on top of statically configured IP to the same interface on console (not by config files)?

I need to find a way to configure an alias by DHCP but not touch statically configured IP of the same interface and have to do it all by console, not by editing some conf files. As far as know you ...
1
vote
1answer
169 views

Access Point offers itself IP if used as DHCP Server?

I'm trying to use an raspberrypi (OS=raspbian 4.0.7) I had flying around so I researched a little bit and everything seems to work more or less fine. I am using hostapd in combination with an wifi ...
1
vote
2answers
378 views

Trying to install a cluster, DHCP failing to start

Trying to install a linux cluster using this tutorial. I am running CentOS 6.3. When I try to start DHCP with service dhcpd start, it fails. I've used tail -f /var/log/messages and dhcpd -t, but I ...
1
vote
1answer
49 views

dhcp3-server and strange DNS/NTP servers

I have problem with dhcp3-server 3.1.1-6+lenny4. My dhcp-server sends "strange" IPs for DNS and NTP servers in DHCP ACK despite configuration which doesn't have those IPs. In ACK packet we can see the ...
0
votes
0answers
33 views

OracleSolaris 11.2 and DHCP configuration failure

I want to have IP address assigned by DHCP, so I set: % netadm enable -p ncp Automatic It seems that after this the dhcp agent has been initiated, and throwing errors: ip: WARNING: net0 has ...
0
votes
1answer
110 views

centos firewall seems block dhcpv6 reply message

It's very strange that my CentOS cannot receive dhcpv6 reply message from dhcpv6 server. I have enabled the rule dhcpv6-client. Every time I try to bring up the interface, dhcpv6 request messages are ...
0
votes
0answers
58 views

Access point doesn't give IP address after DHCP request

I'm trying to follow the instructions in this page: How do I create a WiFi hotspot sharing wireless internet connection (single adapter)? Almost everything works fine, but my dhcp server doesn't ...
0
votes
2answers
585 views

DHCP and read-only root filesystem

When doing ifup wlan0 on a system with / mounted as read-only (embedded computer), I get this error: Failed to connect to non-global ctrl_ifname: wlan0 error: Read-only file system Internet Systems ...
1
vote
1answer
114 views

How to broadcast two access points?

How do I broadcast two access points with two WiFi cards with hostapd? Most tutorials don't work since udhcpd doesn't work with two access points. Example tutorial: ...
0
votes
0answers
50 views

Restarting dhcpd.conf failing

I am trying to setup a Kickstart server and when I am trying to restart the dhcpd server after having updated dhcpd.conf it is throwing a "failed" error. I am installing the Kickstart server on a ...
0
votes
1answer
76 views

DHCP server does not appear on nmap, no errors

I have tried to get into Ubuntu thing recently (newest edition), but I've got a problem with DHCP server. I configured the files /etc/network/interfaces and /etc/dhcp/dhcpd.conf according to my ...
1
vote
0answers
108 views

How to get router info in “dhcp4-change” event in /etc/dhcp/dhclient.d/ script?

Am trying to add a script which will get executed on DHCP ip change for a particular interface. for that I have copied the below script at "/etc/dhcp/dhclient.d/dhcp-hook.sh". I need to get router ...
0
votes
1answer
545 views

Configuring Network using dhcpcd

I have installed the new raspberrypi-net-mods using dhcpcd on my Pi running the latest Raspbian. This works, but I am trying to understand why and how. I have read the dhcpcd and interfaces man pages ...
0
votes
1answer
39 views

dhcpd restart command asks for password from command line but not from a script?

I have a script that runs and will ssh into another server to restart its dhcpd. In the script, the command literally is: sudo ssh -n $SERVER /sbin/service dhcpd restart This works fine when the ...
1
vote
1answer
296 views

Static IP changes to dynamic automatically after time

I have found only one discussion about my problem here, but not a solution. I have access to one Debian 7.8.0 amd64 virtual machine (under VMware) and its IP address is gained through DHCP, e.g., ...
0
votes
1answer
330 views

Problems Setting Up DHCP Server On CentOS 6

I have been trying to set up a DHCP server on CentOS 6 running on an Intel NUC i7. I have installed dhcpd and am using the example dhcpd.conf subnet 192.168.1.0 netmask 255.255.255.0 { option ...