Dynamic Host Configuration Protocol (DHCP) allows computers on the same network to automatically obtain a unique IP address.

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449 views

In Windows 8, How do I make a static IP for each network?

I would like to have it so that my computer sets its IP address statically depending on which network that it is connected to. I have 3 Networks that I regularly use and it seems that with Windows I ...
3
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1answer
159 views

Ethernet connection shows unidentified network with no internet access

For years I've used a physical Ethernet connection for my internet access, then a few days ago it went down and said it was an unidentified network with no internet access. I dug out a wifi card and ...
3
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1answer
682 views

How to make WinServer's AD work with Linux DNS/DHCP on VMware?

I got 2 virtual machines : Windows Server 2008 with Active Directory installed. Linux that works as a DNS and DHCP Server I need to make them work together, but I don't if this is going to be ...
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1answer
6k 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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1answer
49 views

Will Windows renew IP address sometime after “ipconfig /release”?

On a Windows 2000 PC, I did a "ipconfig /release" to disconnect it from the network. After about 6 hours, I checked it again and it was still disconnected. But then about 17 hours after that, I ...
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1answer
92 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 ...
2
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1answer
63 views

Can't connect to server when router is unplugged

So I have a network here where all computers are connected to a switch, including a local server. The router is connected to the switch which supplies the internet. It is also the DHCP server. Does it ...
2
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1answer
39 views

DDNS in BIND9 with custom records

I have BIND9 and DHCP configured to communicate with each other for providing DDNS in my network but I need to also setup custom records as some machines need to respond to more than one hostname. ...
2
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1answer
96 views

Reliable cross-platform way of determining hostname from IP address

Within the DHCP table of a router, clients that have sent their network name are listed with IP and MAC addresses. I need a way to get the host names that clients have sent. The router does not store ...
2
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1answer
506 views

Failed to connect to server: The requested address is a broadcast address, but the appropriate flag was not set

My server IP address starts with 128.xxx.xxx.xxx and my laptop gets its address as a DHCP and is of the for 10.254.xxx.xxx I configured the server to look for my laptop and when I start the server it ...
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1answer
202 views

Change IP based on AP

I connect to 8 different Access Points, each with a separate subnet and each location does not allow DHCP. I want my computer to change my IP address to an assigned IP address per location based on ...
2
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1answer
627 views

dhclient overwriting resolv.conf

I'm setting up virtual dev environments and I want the hostname.domain to be something specific, eg- "barney.local". However my /etc/resolv.conf file keeps getting nuked because i'm using DHCP. I ...
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151 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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1answer
39 views

Static DHCP with Century Link Modem

I'm currently attempting to change my IP address with my modem provided by my ISP (Centurylink). I was told because of the service I have, they use Dynamic IPs with indefinite lease time, and that ...
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1answer
339 views

Behavior of DHCP-client

This is a question about the Internet protocol standards. The DCHP-client (dhcpcd-5.2.10 from Android 4.x) initializes an interface The DHCP-client sends a DHCPDISCOVER message DHCP-server sends a ...
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1answer
23 views

Using custom-defined IP address vs DHCP on Different Networks

On Mac OSX, is it possible to let the computer obtain a specific IP address (192.168.1.123) on wireless network #1, and let DHCP assign it a dynamic IP address on all other wireless entworks?
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1answer
2k 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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1answer
1k views

How do I set up multiple access points with a Packetfront DRG700 broadband modem?

I have a Packetfront DRG700 broadband modem (fiberoptic), which also has a wireless DHCP server built-in. In addition I have a D-Link DIR-615 router which is connected by cable to the modem. I want ...
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1answer
139 views

Setting up routing table via DHCP

I have a system attached by two ports to a DHCP server which gives out the following information: Port 1 Ip Address Mask Gateway 10.170.99.38 255.255.255.128 ...
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1answer
130 views

m0n0wall firewall drops internet connection

I have an ADSL router running in "bridge mode" and a m0n0wall firewall behind that is running its DHCP client on its WAN port, where the ADSL router is connected to. I get regular arp errors in the ...
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1answer
274 views

How does DHCP distribute or choose which IP to give within the scope?

There is something strange happening with my OpenWrt firmware. The scope for my DHCP is 100 to 250 in the 192.168.1.* range but the first IP it gave is 192.168.1.189. Is there any reason it started ...
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1answer
24 views

How to create a DHCP server at home

I'm running Ubuntu 14.04 LTS on my server I have at home (just an old computer) I installed MAAS and I have a few netbook images I'm trying to boot, I have created a node in maas, but when I boot my ...
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1answer
32 views

Server 2008 VPN isn't working, DHCP coming from a different source

Alright, I have a Windows 2008 server running. It serves up DNS but not DHCP. I want to have VPN running on it, and my understanding is that you can do this as long as you set the DHCP relay server ...
0
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1answer
17 views

Ubuntu getting wrong hostname from DHCP

When provisioning new Ubuntu Precise (12.04) servers, the hostname they're getting seems to be generated from the DNS search path, not a reverse lookup on the hostname. Take the following ...
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1answer
46 views

Is IPV6 blocking my DHCP on Fedora?

I’m running Fedora 20 with KDE on a laptop I use for work. When I’m at home I use DHCP and when at work I have to statically assign an IP. When I came home the other day for some reason it doesn’t ...
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1answer
18 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 ...
0
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1answer
58 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
42 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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1answer
52 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
146 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 ...
0
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1answer
21 views

Server 2008 DHCP on a wireless adapter

We have a Server 2008 (x86) computer which acts as a server, also as a router to share Internet into multiple network segments with RRAS. Everything works fine except DHCP on a wireless adapter with ...
0
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1answer
104 views

Use a combination router/modem as a slave to another router

I've got a combination cable modem/router from my cable company. I've also got a Netgear N900 that I love. I'd like to use the advanced features of the N900 (partitioning, guest networks, print ...
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1answer
39 views

Connecting 2 networks together via router

I have a small size business where we have around 22 PCs. At present, I have the internet connected directly to a switch1 (We use dedicated leased line and I have been provided with 5 static IPs by ...
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1answer
136 views

DHCP Pool Range / IP-Camera Setup

Lately I have been trying to set up a IP-Camera for friends wirelessly. I realized on their router its DHCP pool range is from 192.169.2.100 - 192.168.2.200. But when I changed the IP address of the ...
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1answer
105 views

DHCP fallback based on /etc/hosts lookup of your hostname

I have a Kubuntu box (12.04) which usually gets its IP via DHCP. However, it also has a hosts file with some entries in case the DHCP+DNS server fails. Now, if there is no DHCP available, I want the ...
0
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1answer
68 views

Show pc with static IP on dynamic IP router

I have a router with dynamic DHCP where I created some fixed addresses for some things I want to use with dyndns. The problem is, that I have a pc/server which does not support DHCP/dynamic IP, so I ...
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1k views

Ubuntu Server 11.10 interfaces file unreadable

I am configuring ubuntu server 11.10 to go from dhcp to static and whenever I try to restart my networking manager, I get the error: command ran: sudo /etc/init.d/networking restart ...
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176 views

How to configure VirtualBox so that I can address Guest VM by name instead of IP address?

I have a CentOS 6.3 VM running on a Windows 7 host using VirtualBox. The guest is using a Bridged Adapter. How can I configure VirtualBox to allow me to access my CentOS 6.3 guest OS by name instead ...
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135 views

Connecting PC with static IP to netbooter

I am trying to connect a netBooter to a computer with a static IP address. The instructions in the netbooter ( http://www.synaccess-net.com/support.php ) say that I can connect the netbooter directly ...
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147 views

1:1 NAT IP address using iptables

Suppose I have 2 internal networks: 1.1.1.0/24 and 1.1.2.0/24 I would like to NAT a specific IP address from one network to the other, in which the new address would be obtained via DHCP. For ...
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65 views

How to electronically determine if ISP assigns DHCP addresses in RFC1918 range

Is there an electronic method/protocol/public-website that I can use to definitively determine whether or not my ISP assigns (RFC1918, Private_network) addresses for DHCP assigned addresses? I ...
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703 views

DHCP Client Can't Find DHCP Server

I currently have 3 machines: CentOS (router) eth1 - 18.0.168.1 eth2 - 145.165.34.1 Windows Server 2008 (server) 18.0.168.2 DHCP scope - 145.165.34.10 - 145.165.34.20 Windows 7 (client) Supposed ...
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212 views

Windoews 7 doesn't Take the right IP configuration when it set to obtain IP automatically

Every time I connect to a network wireless or LAN The laptop does not take the right IP Configuration while the adapters are set to obtain the IP Configuration Automatically, after connecting to the ...
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58 views

Network connectivity

I have a switch in my room with 2 machines connected. There is another switch in another room connected to a DHCP server. One of the two machines in my room can access the network past the switch in ...
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134 views

Windows 7 drops connection when searching for another computer

I have been struggling with this issue now for a week. Here's the basics behind things... First of all, the main firewall/DHCP Server/et al for my workplace is a SnapGear SG850. Until recently, ...
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510 views

DHCP Discover with no Client Identifier (Internet Radio incompatible with Netgear and Linksys routers)

I have a Sangean DDR-63 internet radio (innards made by Frontier Silicon). If I use my Verizon WiFi cellular modem hotspot it works fine (but that's expensive). Connected directly to my cable modem ...
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631 views

How to Configure a Hotplugged Network Interface with a Static IP Address

I have a device that I connect to my host Ubuntu machine via Ethernet over USB. It shows up as usb0 in ifconfig and the device always has the same address: 192.168.0.1. I have the following two ...
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202 views

Diagnosing an Internet Radio's network problems

I bought an Internet radio: a box with speakers, built-in CD player and FM tuner, Ethernet connector, WiFi antenna etc. It's a new model, released about 6 months ago. When I try to set it up, ...
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510 views

Laptop can't find the DHCP server

My laptop (Acer Aspire One running on Windows XP) isn't connecting properly to the router we have (2WIRE, At&T UVerse DSL). When I try to connect, it gets stuck on "Acquiring network address". ...
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108 views

how to connect linux to win 7 that tether from my Android?

not sure if it's an Android question but ... I connect my win7 to the Inet via USB tethering. I wonder if and how I can connect my linux box to the net. It can be done only via ethernet.