Dynamic Host Configuration Protocol; allows computers on the same network to automatically obtain unique IP addresses and other network configuration parameters.

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Problems Configuring Netgear Prosafe 7224v4 Switch

Our office has a Netgear Prosafe 7224v2 Switch which was installed a number of years ago. Currently the switch is not configured to act as a DHCP server thus we need to manually assign all our ...
0
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1answer
15 views

Bridged Network not working on Ubuntu Guest, Windows 8 Host using VMWare

I'm using VMWare Workstation 11 (Ubuntu 15.04 Guest, Windows 8.1 Host) and bridged networking is operating fine on my home network; however, when I try using the same configuration on my work network ...
0
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1answer
15 views

Connecting to two Networks with different DHCP servers

Ok, So at home I have two wired Networks (one with internet access and one that doesn't) I have Multiple Network adapters on my PC and I want to use one into one network and another to the other ...
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0answers
9 views

RT5572 can authenticate using WPA2, but can't get an IP address from DHCP

I have a system running open embedded Linux with the Ralink RT5572 wireless usb card. I have the driver installed along with wpa_supplicant and I need to be able to connect to a WPA2 secured network. ...
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1answer
25 views

Internet drops - two routers handing out IP addresses?

My apartment block of 14 apartments share one fiber-optic internect connection. However, I've been having trouble setting up my wifi. I have two routers. 1) A D-link. This works out of the box, but ...
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1answer
59 views

internal static IP address configuration from router

How do I reserve an IP address for tleilax and ensure that tleilax only gets that reserved address? The tleilax box uses DHCP. When I look at attached devices, I see: Attached Devices Wired ...
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0answers
8 views

How do I start udhcpc automatically on startup?

I used the following command: udhcpc -i eth0 and configured the eth0 device to DHCP.  Now, running ifconfig shows me my dynamic IP address. After I reboot the device, this configuration was gone; ...
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0answers
14 views

How to make udhcpc changes permanent in Poky (Yokto) Dizzy distribution

I used the following command: udhcpc -i eth0 and configured the eth0 device to DHCP.  Now, running ifconfig shows me my dynamic IP address. After I reboot the device, this configuration was gone; ...
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2answers
45 views

How to see what DHCP client does?

Does the dhcp client on Linux write any logs? If not, can logs be enabled and how? If it writes logs, where can they be found? How does a typical log of a dhcp client look like when obtaining IP ...
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0answers
18 views

What is the correct syntax for the dhclient.conf supersede statement?

I am using the Internet Systems Consortium DHCP Client 4.2.4. I want to use the supersede statement to override two DNS servers from DHCP. The corresponding man page section reads: The supersede ...
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1answer
43 views

How to configure DNS servers manually on Ubuntu server via bash?

I still want to use DHCP to obtain IP4 and IP6 addresses. DHCP delivers DNS servers I want that the DNS servers from DHCP are ignored and two servers I specify manually are used instead. Must be done ...
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2answers
166 views

DHCP failure when rebooting RPI 2

When we start up my Raspberry pi 2, we get the following error: When the RPI is rebooted, we are getting an IP and we are able to surf on the internet, so we don't know what the error exactly ...
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1answer
36 views

Server 2012 DHCP Policies

I'm studying DHCP and Windows Server. I have a virtual SOHO inside VMware, running the following config: SRV1 (Server 2012): 192.168.10.10 (Addr Reservation DHCP) DHCP Pool: 192.168.10.1 - ...
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vote
2answers
1k views

In OS X, how can I prepend 127.0.0.1 to the list of DNS servers obtained through DHCP?

I am trying to use dnsmasq to resolve certain known domains using its configuration, but let the rest of the requests go through to the normal DNS server assigned by DHCP. I cannot get this to work. ...
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0answers
41 views

Beaglebone DHCP Server Assigns its Own IP Address

I'm trying to run a DHCP server on my Beaglebone Black (running Debian), and I want to give it a static IP address - 192.168.17.1 - but it keeps assigning itself its own different IP address - ...
4
votes
1answer
8k views

PC does not get ip address from router using wired connection

I have an ASUS WL-520GU wireless router with four LAN ports. When my laptop is running Windows 7, and I make a wired connection from the laptop to the router, the laptop does not get an IP address. ...
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0answers
18 views

dd-wrt subnet from network with in a network

I am testing some network configurations. I am trying to create a network within a network for TESTING PURPOSES ONLY. Basically the gateway for ARouter(made up name for main router) is 192.168.0.1(for ...
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1answer
26 views

OS X only picks up 1 of 3 DNS servers from DHCP on DD-WRT

I am running a DD-WRT router, and in the "Network Address Server Settings (DHCP)" section on the "Basic Setup" page, I have entered values for "Static DNS 1", "Static DNS 2", and "Static DNS 3". On ...
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3answers
3k views

No internet connection when connected via wi-fi, but fine via ethernet (DD-WRT)

I just bought a new router and installed DD-WRT on it. When I connect to the router via wi-fi, I cannot get an outside internet connection (and in fact, can not connect to the router admin interface ...
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0answers
18 views

dnsmasq pass a url using dhcp option 43

I have been reading the documentation of dnsmasq and different examples found on internet but I have been unable to succeed. I am trying to pass a URL to the CPE using dhcp option 43. The CPE is ...
0
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1answer
34 views

looking for a utility to test DHCP settings

Iv'e recently installed DHCP server (isc-dhcp-server) in my workplace. I'm looking for a utility to test the network DHCP settings from a remote machine (not by using dhclient / iptables /renew). ...
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1answer
62 views

DNS Resolution Errors on New Active Directory (Server 2012 R2)

In advance I thank you for any help or advice you can provide as I am fairly new to the concepts and config of Active Directory and related roles like DNS, DHCP etc. I have recently set up a domain ...
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2answers
35 views

Router without DHCP set and has external IP from local perspective

I have a network like: x.x.0.1 - ISP's AP, then mikrotik router x.x.0.5 -> set up by specialist and another router x.x.0.7 -> for my learning purposes. My problem is, that I really don't understand ...
2
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1answer
80 views

DHCP Reservations, SERVER 2003, easy way to Export txt\csv\xml

I have a list of DHCP reservations, Server 2003. I want to export (in all it is) a list of IP, MAC address. I need the list for view: sorting\store in of DB for later Query, not for importing later. ...
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4answers
4k views

Network interface/dhcp problems ubuntu with kvm and network bridge

I have a ubuntu system running 12.10 I am using KVM and have configured a bridge for the virtual machines, which is using nat forwarding. I am having problems with the connection dropping out ...
0
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1answer
28 views

Printer wasn't working. Gave it a Static IP and now it works! But why?

I was toying with my printer to get it to work. Originally, the printer was automatically given an IP of (169.254.248.206) However... I read that manually setting the printer's IP outside my ...
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3answers
3k views

Arch Linux Install Cannot Enable dhcpd

I am trying to setup internet with arch linux. I just installed it using parallels and got the following error: [root@singularity ~]# systemctl enable dhcpd.service Failed to issue method call: No ...
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0answers
19 views

Debian 8: Server makes routers dhcp crash

I've got an old pc with debian 8 running as home server. A small problem is that whenever the server uses a lot of network traffic, let's say while downloading torrents, it seems to crash the dhcp of ...
0
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1answer
256 views

Locate Host Name on LAN with DNSMasq

I am running DNSMasq as both my DHCP and DNS server on my DD-WRT router. I had thought that DNSMasq was adding hosts that it registered in DHCP to the DNS server automatically, but I have a few ...
3
votes
1answer
3k views

How can I determine the IP addresses allocated by DHCP on a router that I'm connected to?

This "router" is not a typical situation. I'm using my phone as a hotspot and can only configure a select number of DHCP options. I can manage the limit on how many devices/clients can use my phone ...
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votes
6answers
11k views

Why do most routers not include local DNS?

I need to change my firewall/router, and I'd prefer something with built-in DNS to resolve queries on the local subnets. I've got a mixed Linux/Windows system, often with only one computer turned on, ...
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2answers
37 views

Why does a device show up twice on my dhcp table? [duplicate]

I bought a new router yesterday, but I dont think that's relevant because on my previous router it happened too. The only change is that my first router wasn't dualband and this new one is. So that ...
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3answers
716 views

How to find the IP address of a router

I live in a dorm where many students have setup small wireless networks. There are two of this networks that are very close to my room as the signal is very strong. Our college uses DHCP to assign IP ...
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0answers
20 views

dhcp bridge w assigned ip address

You seemed to be the most helpful from what i read on most threads, so i'm gonna run this problem by you and see what we come up with. ill start with the problem my xbox 1 says i have an open NAT and ...
1
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0answers
31 views

Linksys EA6500 and Android DHCP

Situation: I have a Linksys EA6500 v2 Wireless-N router. About 2 months ago, I had to perform a factory reset because my ISP refused to accept that my router wasn't the issue with my Internet access. ...
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0answers
16 views

I cannot capture DHCPv6 packets on GNS3 using Wireshark

I have got a router set up as a DHCPv6 server connected to a host that gets an IPv4 & IPv6 addresses from it, however I am not able to capture any DHCPv6 packets at any point of the connection. ...
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0answers
21 views

Ubuntu server as DHCP server for dual stack

I currently have an Ubuntu server on VirtualBox set up to give hosts on my GNS3 topology IPv4 addresses, and it is working without issues. However, I would like to have that same DHCP server give out ...
24
votes
7answers
75k views

How to force Windows 7 to ask for a “fresh” IP address from DHCP server?

I'm troubleshooting a certain issue with my DHCP configuration, and need my Windows machine to ask for a "fresh" IP address, so I can see which address DHCP server gives by default. When I do ...
1
vote
1answer
36 views

What's the use of search domains? [closed]

Something you often see as a configurable option for DHCP are the DNS servers and the search domain. Alright, DNS servers have an actual use, but I'm not so sure about search domains. It took me quite ...
0
votes
4answers
4k views

How to skip pushing the default gateway via DHCP in OpenWRT?

I have a router with OpenWRT that I want to resolve IP addressing with DHCP without setting a default gateway. I have added a DHCP-Option parameter with value 3,0.0.0.0 that is supposed to set the ...
0
votes
1answer
25 views

isc-dhcpd sanity check fail even though everything looks right

I have a machine in freebsd 8.1 and I am failing to do service isc-dhcpd start it keeps saying "Configuration file sanity check failed" Hint: I copy the /usr/local.rc.d/isc-dhcpd and ...
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2answers
37 views

DHCP server used reserved IP

I am using DHCP server on centOS 6.5, I reserved an IP for specific MAC address my config file /etc/dhcp/dhcpd.conf option domain-name-servers 192.168.1.5, 8.8.8.8; ...
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0answers
10 views

Making multiple DHCP IP permanent in Ubuntu 12.04.5

I followed the instructions here Getting 2 IP addresses on one network card, using DHCP and this worked for me but how do I make it permanent in Ubuntu 12.04? Should I put it in some sort of cron job ...
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vote
2answers
87 views

Why does DHCP uses UDP port 67 and 68 for the communication between the client and server?

I know that the DHCP is used to assign an IP address to the client and hence the only possible way to establish the connection is to listen on a specific port. But is there any specific reason behind ...
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0answers
29 views

Win7 load balancing over 2 default gateways and 1 interface

This is a scenario I've been working on lately: My PC has 1 NIC connected to a 192.168.100.0/24 network. This network has 2 gateways to the Internet, namely .1 and .254. Now I want to get to the ...
58
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5answers
48k views

How can I stop Mac OS X overriding my hostname when I receive a DHCP request on Snow Leopard?

Whenever I go on a network where the DHCP server assigns hostnames then it overrides the settings I've set for my hostname on my Mac in the "Sharing" section of System Preferences. How do I stop this ...
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votes
1answer
36 views

Set DHCP with manual IP

Any idea how can we set a DHCP with manual IP address from the terminal OSX (for a wifi interface)? I know that this set a manual IP but not sure how to keep the DHCP: sudo ipconfig set en1 INFORM ...
2
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2answers
624 views

Which server is selected by the client if it receives Offer from 2 DHCP servers at a time?

Which server's IP address is selected if the client receives the Offer from 2 DHCP servers (on different subnet) at a time? I searched Google and the answer I got is: which Offer comes first will be ...
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0answers
88 views

Dual boot Linux Fedora 22 internet not working

I recently installed Fedora x64 on another partition alongside with windows. I went over the install process many times before I got it installed and sometimes the internet would connect, but I'd see ...
0
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1answer
48 views

Configure localhost to use DHCP IP address

I have a local server Wildfly and I have a test application which I can access: http://localhost:8080 works. Now, I have comcast Xfinity with a modem (no additional router). I am working on CentOS ...