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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168 views

Ubuntu failing to acquire IPv4 over I217-V, Windows failing do the same over a USB Ethernet adapter

Just installed a fresh copy of 14.04, and ran into a very upsetting issue, which I wouldn't expect to encounter in 2014: Ubuntu refuses to work with my integrated network controller - Intel I217-V. ...
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2answers
219 views

Cannot reach the computer in WAN

I wanted to split the internet connection in my room. And my brother also wanted a better wifi accessability. So we bought a router (NETGEAR JWNR2010v5). All we wanted works great, good wifi. I have ...
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2answers
142 views

Static IP hosts on WiFi router with DHCP

I have two wired hosts (a desktop and a laptop) connected to a router that also has a DHCP server enabled for WiFi access. When I restart my wired machines, they get assigned a secondary IP address by ...
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2answers
535 views

SSHD reverse mapping fails, but nslookup, dig, and host resolve correctly

I just set up a dhcp/dns server to manage my home network. After I got everything up and running (and maybe before - I wasn't paying close attention), I noticed that logging into ssh was slow. I ...
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2answers
126 views

dhclient can't get ip address

I have two interfaces: eth0 and eth1. eth0 gets ip address upon bootup, but eth1 never gets ip address. Here's what I get with sudo dhclient eth1 Internet Systems Consortium DHCP Client 4.2.4 ...
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0answers
64 views

dhclient not working for

I tried to get a IP address for eth0 via dhclient, but it hangs forever. Please help me find out what's wrong. I am running it inside a virutalbox guest machine. There're two interfaces, eth0 and ...
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2answers
90 views

Joining client to Server in VirtualBox

Having installed the trial of Server 2012 and a copy of Win 7 Pro in VirtualBox, I now need to join them together so the client can be in the domain of the server. I need to deactivate dhcp within ...
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30 views

Prevent DHCP Lease Updates From Adding Gateways

I am having a problem preventing DHCP Lease Updates from modifying my route table in Windows. My issue is that I am routing all my traffic through a VPN and purposefully delete the 0.0.0.0 route ...
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52 views

Does a flexible (e.g. DHCP) Windows multihomed wifi adapter configuration exist?

Given Location Configuration Internet & wifi modem address: 192.168.0.1 no DHCP iDrac remote server access: 192.168.0.250 Firewall router with NAT: 192.168.0.254 -> 192.168.5.0/24 DHCP & ...
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129 views

multiple DHCP servers for wireless users on same subnet

I am trying to set up 2 router in our network with following set up. 2 routers, 1 is the main router that DHCP is enabled to assign ip to all wired PCs, the other one can be assumed for guest, which ...
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1answer
42 views

How can my server announce its presence to everyone in the network [closed]

The situation is as follows. I want to have an application running on a server. All of the desktops in the company has to connect to it. But I do not want the IP address of the server to be hard coded ...
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55 views

/etc/ethers is not being read by dnsmasq

I recently configured dnsmasq on Raspbian, and everything was working perfectly except that /etc/ethers wasn't being read (yes, I did uncomment read-ethers and remember to restart dnsmasq) - the ...
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104 views

(Windows 7)Bridge: (tap+wifi) -> ok, (tap+ethernet) -> dhcp is not working. What are possible problems?

All this happen on win 7. I set up the ovpn bridged connection with wifi+tap bridged, and it worked fine. Now I need to make it use ethernet instead of wifi, but bridging of ethenet+tap has issues: ...
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2answers
166 views

How the WLAN interface of a home router do to reply DHCP requests just at connection time?

Using VirtualBox I created a VM with the following VirtualBox Network Settings: Attached to: Bridged Adapter Name: wlan0 ... .. . wlan0 is the wireless interface of my laptop, which is connected to ...
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1answer
69 views

Send files between two systems over LAN

I am able to send the files from one to another system connected on same router in a LAN. Now, I connected one more router to the first router to increase the range of wireless connectivity. When I ...
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2answers
94 views

How should I set up network using 2 routers so both see networked computers / printers

I have a Cisco DPC3825 DOCSIS 3.0 Gateway modem from my ISP that has 4 lan ports, and I have a second router Linksys WRT54GS (running DDWRT) that has a WAN port and 4 LAN ports + Wireless. This is the ...
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1answer
27 views

Connect two networks across another router

I'm trying to get a network setup with three routers, and three DHCP servers. Sounds silly, but if I can get it to work, I can eliminate a lot of re-wiring, etc in the building. I have a modem/router ...
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2answers
418 views

How to disable DHCP on Netgear CG3700EMR-1CMNDS?

I just got a Netgear CG3700EMR-1CMNDS from my ISP. How do I disable its DHCP server? I'm unable to find the setting.
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0answers
202 views

Windows Wireless Hosted Network (aka: Hotspot) - Port Forwarding and DHCP

I'm on Windows 8.1 and have been experimenting with the Wireless Hosted Network feature, aka: "Turn my computer into a WiFi Router". It wasn't hard to turn on, set an SSID and WPA pass, but now I'm ...
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1answer
76 views

How to make laptop (mac) to function as a router (with DHCP off)?

My ISP allows connecting only two devices. The MAC addresses of both my devices (MacBook Pro laptop and iPad) are registered with them. The problem is that I do not have a router, and the internet I ...
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1answer
74 views

Assigning fixed IP by DHCP in VMWare Workstation

Windows 7 host OS, Ubuntu 12 guest OS, VMWare workstation 10.0.2. I want my Ubuntu to use DHCP, but to get a fixed IP. Using the Virtual Network Editor I don't see how I can do that - is there some ...
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3answers
450 views

Windows 7 - Static DHCP server address with dynamic IP Address

Is this possible? On my LAN, I would like to setup the network properties such that the DHCP server's address is static. However, I want that server to hand out the IP Addresses and DNS addresses ...
2
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1answer
397 views

Systemd-networkd: How can I prepend a static nameserver entry to DHCP-discovered nameservers?

I'm using systemd 213 on Arch Linux, and systemd-networkd/resolved with DHCP to connect to the internet. I'm also running a caching DNS server on 127.0.0.1. I'd like to make this server the first DNS ...
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2answers
162 views

setup Mac Book Wifi interface as Wifi hotspot using specific DHCP option

I want to using my Mac Book as an access point. Besides that I also need to configure its DHCP server to not provide DNS info. For example, Mac Books AP's ssid is "MacBookHotspot". While my iPhone ...
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0answers
165 views

How to create a dhcpd.conf file

I have followed the tutorial on this page to create an access point on an Arch Linux install. It seems that went mostly ok apart from an error from DHCPD server: Internet Systems Consortium DHCP ...
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0answers
188 views

How does my ISP knows that I am sharing my internet connection? and how to bypass it?

I am in a student residence hall.There is one ethernet socket in the room. I can connect my laptop to the cable, but how can I get internet in my iPad? It will be good to have internet on both of ...
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1answer
59 views

How to eliminate the downtime when a dynamic IP address changes?

We currently have a number of client computers linked up to a database server (MS SQL 2008) for replication. The database server recognises the computers based on their Windows hostname. We are using ...
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2answers
116 views

How can I ensure that my static ip address is read from /etc/network/interfaces rather than dhcp?

This is a follow up to the following question. I'm trying to set a static IP by changing /etc/network/interfaces to the following: # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo ...
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2answers
149 views

Setting the IP with dhcpcd

I have a setup where my system is in the regular home network connected to the router. The router assigns the IP to my device without issues. I would like to use the same IP every time for my device. ...
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1answer
158 views

How to see DHCP assignments in Draytek Vigor 2920 router

Web interface looks chaotic for me. Where can I see a list of computers, which had received IP addresses by DHCP?
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1answer
246 views

Windows failing to renew IP lease

Approximately a month ago I started experiencing a minor, but frustrating problem: my internet connection would drop for several seconds every two hours. My quick investigation showed that these ...
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1answer
199 views

How do I change the IP address of a DHCP reservation in Windows Server?

I am trying to change the IP address of a DHCP reservation in Windows Server but the IP address box is grayed out.
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0answers
27 views

Script to email administrator when a duplicate IP is found on the network

I know this is a bit of a custom requirement but I was hoping someone currently has (or can put together) a script that checks for duplicate IP addresses on a network (something that might occur when ...
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1answer
126 views

I have too many DNS servers configured

The OS is Win 8.1. I have my laptop connecting to my wireless router, and I have told the router to issue out DNS via the DHCP lease. The laptop is configured to use the information. The router is ...
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0answers
19 views

DLink 614+ Connect two LANs

I have a DI-Link 614 router. As WAN connection I have a LAN which has access to internet and I do not manage it. I have 2 computers (PC1, PC2) and 2 devices connected to the router. I have ...
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2answers
390 views

Can only ping on LAN, not internet

I have 2 computers running Ubuntu 12.04 connected to a router on the 192.168.3 subnet. This router is connected to another router via the first router's modem port, so the 192.168.3 router has access ...
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1answer
45 views

domain name in dhcp

My os is ubuntu and I use virtualbox and I have xp on that. now I want to set my ubuntu to dhcp server. So I downloaded isc-dhcp-server on ubuntu in configuration file i see these two line are not ...
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2answers
295 views

Re-assign IP address for VMWare image that is already running

I'm using VMWare Player. When an image running CentOS (Linux) 6.5 boots up, VMWare Player assigns an IP address dynamically (probably using DHCP) to that image. I'm assuming the IP address on the ...
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2answers
189 views

How do I get my devices to recognize the correct router and IP subnet?

The Basics Our home has a DSL line coming in to a modem on the second floor. A line then goes down to a switch/hub and through to our downstairs living room where a wireless router is set up. Up ...
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146 views

Internet slow down after Setting up Domain Controller on VM

I running Hyper-V on 12 computer and windows server 2012 on 1 computer. I set up 2 Virtual machine Domain Controller on 2 separate computer. The second one is just a failover read only DC. My whole ...
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2answers
84 views

How can i keep an entry in my routing table, even when the associated interface goes down?

I have a linux box set up as my internet router. I have the eth0 interface connected to the lan, and the eth1 interface connected to a pppoa modem and configured with dhcp to my public ip. Due to ...
1
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1answer
145 views

Static route set from dhcp

Does anyone know if it is possible to add static routes with dhcp? I know that there is option 121 in dhcp but I read that it can set routing via some gateway IP, and I need to set routing via device. ...
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3answers
4k views

Check if a DHCP server existing in my network using bash

using CentOS with static IP, Is there any way to determinate if a DHCP server running on the network using bash ?
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0answers
23 views

Additional ip addresses along dhcp

On windows it seems possible to add arbitrary ip addresses on the interface, but as soon as you add one, the addresses obtained with DHCP is removed. Is it possible to set static ip addresses while ...
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0answers
41 views

dhcp no lease because of not-DAD mode

My virtual machine does not receive an IP lease anymore. Manually requesting a new ip lease by 'ifdown/ifup eth0' or 'dhclient eth0' or 'service network restart' don't work either. The error is ...
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473 views

IP attributed with Microsoft Virtual Wifi Miniport Adapter

I created a "Wireless Hosted Network" using this very helpful command : netsh wlan set hostednetwork mode=allow ssid=YourVirtualNetworkName key=YourNetworkPassword (It is a very interesting ...
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2answers
700 views

Can a DHCP router with MAC address whitelist be hacked with a VM?

I locked down my whole network’s MAC addresses so that only CPU’s on the whitelist can get an IP from the AirPort Extreme DHCP server and router. Well, guess what. A Mavericks VM with a completely ...
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0answers
68 views

How to setup private network using 2 routers with the following setup, one with ddwrt: internet modem > router > router?

I just purchased a DDWRT router with ddwrt v24 installed. Now I have a regular netgear router (R6300) that is connected to an internet cable modem. Internet Cable Modem > Netgear Router > DDWRT ...
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2answers
90 views

DHCP server which only configures default gateway

I have static ip's assigned to my machines, but no default routes. I want to send only the default gateways via a dhcp server. Is that possible?
1
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1answer
293 views

dhcpcd overwrites NetworkManager's /etc/resolv.conf

I have an Archlinux machine. The IP is set to a fixed value, configured via the NetworkManager. When I tell the NetworkManager to connect with this configuration it successfully updates my ...