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

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Getting 2 IP addresses on one network card, using DHCP

Given: A computer running Linux (CentOS 5.x), one network card connected to LAN switch, a second one to cable modem via crossover cable. This computer acts as a router/firewall/traffic shaper for the ...
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6k views

Netgear router/powerline adapter assigning wrong IP address via DHCP

I've got a problem with my router and powerline adapter, for some reason my router and powerline adapter assign odd IP addresses to me network devices, but not all of them and not all the time:/ You ...
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1answer
569 views

OS X location aware networking

I have a macbook running OS X 10.6.2. I would like to be able to use DHCP when roaming, but automatically switch to a static IP when my macbook is in range of my home router. Right now I must manually ...
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DHCP table in Debian

How to view all assigned ip addresses on a Debian DHCP server? It is usually easy to do on a standalone router through a web interface. How to do it with dhcpd in Debian?
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Add a static IP alias to a DHCP interface on Windows 8

I have a Windows 8 machine that has only a single Ethernet port. It needs to use DHCP and also needs a static IP. Each IP is in a different subnet, and each serves a different, incompatible purpose. ...
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4answers
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Can I Chain Two Routers Together Keeping DHCP on Both?

I have read that I can connect a second router by turning off DHCP and NAT, but I want the second router to assign DNS (I'm using it as an access point for my kids, and will use OpenDNS family service ...
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2answers
13k views

Wrong IP address when pinged from another machine?

I recently got a new computer at work and I'm having trouble connecting to it from other computers. I can access other computers from it, just not the other way around. I checked all the usual ...
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2answers
535 views

No route to host after changing interface to static ip

I installed a Linux (Ubuntu) server inside my home LAN, initially it's automatically configured to use DHCP interface. I'm connecting to this server from another computer using that server's hostname. ...
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1answer
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How to request a specific IP address from DHCP server?

How to request a specific IP address from DHCP server? This question also touches the topic of DHCP address reservation in a router. Background: My home routers DHCP table only allows to create an ...
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5answers
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DDWRT serving additional DNS servers instead of just the router's IP

I have a DD-WRT router set up with DNSMasq to resolve certain domains to internal addresses and pass everything else thru. The router itself is configured to use Google's public DNS servers to resolve ...
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5answers
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security webcam, but NATted dhcp ip address

I would like to install a webcam (better if an independent ethernet based object) at home, and access it from outside while I'm abroad, so I can check if there's mail. However, my internet connection ...
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2answers
172 views

What type of router (non wifi) for DHCP assignment?

So I have a pretty large house that use to be connected to a business network that had a DHCP server. However we've disconnected that business network and put in residential internet so I need a new ...
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Ubuntu box keeps dropping wired network connection

good morning all. Odd one for you... I have an Ubuntu box, 11.04 x64, running on a Dual Opteron SFF box (iWill ZMaxDP... pretty old machine). Up until a few weeks ago, it was acting as a Windows ...
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2answers
235 views

DHCP: Replacing one IP with another

I started having some network problems today and was about to throw in the towel and start finding replacement hardware when I shut the machine down and notices the ping window I left open to the ...
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1answer
4k views

How can i assign multiple IP addresses to an NIC (possibly software solution)?

I am connected to a network that assigns my IP address via DHCP, but i also need to assign my NIC an IP address that is not in the network's address range. Is this possible, maybe with some "virtual ...
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1answer
137 views

ZyWall USG 200 assigning many IPs to one device

Running a network behind a ZyWall USG 200. Our subnet has around 100-110 devices connected at any particular time. Recently some users were having trouble with getting a DHCP address (keep getting ...
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What happens when router has been set to incorrect time?

I have a D-Link router for my home Wi-Fi network. Everyday at least once the internet suddenly goes down. I am simply not able to connect to the Wi-Fi network. If I just restart the router, it starts ...
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2answers
928 views

“Network Scan” gives “DHCPServer FAILED”, but it's checking the wrong address

When I do a "Windows Help and Support Center" "Network Scan" on my XP SP3 machine, it tests a very long list of various things. All are marked "OK" except: > DHCPServer 192.168.0.1 (FAILED) > ...
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home network question regarding dhcp

My home network consists of a cable modem provided by the ISP, which is connected to a switch, from the switch 1 cable runs to the digital tv decoder/recorder also provided by my ISP and another cable ...
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1answer
280 views

Why does my (home) router append a DNS suffix?

I wonder if any other people have come across this. I've rented rooms in two houses this year, and they both have Sky (a UK ISP) Broadband routers. For some reason, the router I currently use hands ...
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2answers
485 views

MacBook Pro not obtaining IP address after replacing logic board

I just got my MacBook Pro back today from having the logic board replaced. While in the Apple store the Internet worked ok. I got home and it was able to connect to my WiFi, but could not obtain an ...
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4answers
2k views

Static IP in LAN with DNS name

I have a LAN at home sitting behind the router (Linksys WRT54G). The IP addresses assigned to the Linux boxes are 192.168.0.101 192.168.0.102 192.168.0.103 The Router is also connected to the ...
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1answer
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Windows Server 2008 is not showing DHCP-Server configuration in Server-Manager

I've successfully installed the DHCP server role on my Windows Server 2008 R2. After configuring everything, DHCP is working just fine. I can configure the DHCP server via Start -> Programs -> ...
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How do I open the dhcp-client log on Windows 7?

Tried searching the web for answers but my google voodoo isn't strong enough.
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LinkSys router suddenly cannot get an IP address

I have a linksys router WRT54G2 connected to a cable broadband. Just last week, everything was working perfectly - I would be able to connect my laptop to the internet using WiFi. However, starting ...
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2answers
663 views

How to set up DHCP-configured access through a Linux box?

I would like an old desktop box to use my laptop as a router to access the internet. Here is my setup: I have one ethernet port in the side of my laptop which I want to use to get internet access ...
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4answers
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Wireless DHCP doesn't work until wired Ethernet plugged in

A client of mine has an Asus R1F tablet running Windows XP Tablet SP3. It has an Intel 3945ABG wireless card; wired Ethernet is a Realtek something-or-other. In the past few days, it's developed an ...
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2answers
353 views

DHCP and 169.xxx.xxx.xxx [duplicate]

I have been seeing this a lot at work and at home. At home, a single device will not obtain an IP from the DHCP so it self assigns an IP in the 169.xxx.xxx.xxx range. If I put in a static IP it works ...
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1answer
681 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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3answers
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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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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
158 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 ...
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3answers
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Can DHCP provide DNS addresses when IP is static?

In Windows, when I select static IP (instead of DHCP-assigned one) I have to enter the IP address for DNS servers. Is there a way to manually set IP address yet obtain the DNS addresses from the DHCP ...
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4answers
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How access network computers by name

I have a local home network. The computers get IP address from a router via DHCP. So the address are dynamic and change. How can I assign names to computers to be able refer by name? One computer is ...
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2answers
286 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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3answers
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My first home network setup with a wireless router and switch

I just got a Linksys SRW224G4 switch (24 10/100, 4 10/100/1000) I already have a Linksys WRT54GS router. (I know it's old, but it works) My problem is that well, I have no idea what I'm doing. I ...
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Why is my static IP address different if I plug in a router?

I just purchased a static IP package from my ISP, and was told the IP was something like 24.x.x.x. And they assigned the static IP to the modem. So, if I plug my cable modem directly to my laptop, ...
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1answer
523 views

NIC card using strange IP address

I'm using Windows Vista on a laptop, and while my wireless card works fine and takes the address the wireless router's DHCP server gives it, for some reason when I plug my (built-in) laptop NIC port ...
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2answers
510 views

How can I setup a router to assign IP addresses to all connections through a 24-port hub?

How can I do that? Also is there any router that is already ready to handle something like that? Is there any other recommended setup to solve this problem. This is a relatively low budget (probably ...
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3answers
858 views

Does NAT Map to the MAC Address, or to the Local IP?

I would like to set up NAT to put a service on internet using my Technicolor TG 582 router. I mention the specific router model just to have a reference, but the question goes in general as I may ...
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3answers
146 views

what is the work of dhcp

hi all I am little bit confused about dynamic and static IP concept.What is dhcp and What actually DHCP does.Please provide me some idea about IP,Port and DHCP.
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2answers
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DNS / DHCP Issues

I just got back from a site visit where I had to use a fixed IP, gateway, and DNS address. When off the main network there, I used a USB 3G modem with no problem, but as soon as I got home, I could ...
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1answer
288 views

Forcing resolver to OpenDNS's servers

I'm trying to configure Debian as a router/gateway on my network with eth0 going to my ISP's modem and eth1 to my LAN. eth0 needs DHCP so that it gets the proper IP address from my ISP modem, but in ...
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2answers
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Pinging own machine returns an IPv6 address instead of IPv4

When I ping my own machine I get an IPv6 address: Reply from fe80::1004:p8f0:9e40:a42c%10: time<1ms Reply from fe80::1004:p8f0:9e40:a42c%10: time<1ms I used to get the IPv4 address (eg. ...
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3answers
9k views

Why can't my router connect to Internet?

I have UPC internet connection (chello.pl). My router is D-Link DIR-300. When I use provided modem to connect to the internet there is no problem. When I try to do it via router, I can't get a ...
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3answers
799 views

ad blocking host file, shared to all computers on local network

I currently update my local hosts file with advertising server domain names and direct them to nowhere. Well, almost nowhere. I point them to 127.0.0.1 and I don't have a web service running so it is ...
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Using DHCP manual/auto independantly from DNS manual/auto

I've read several definitions for DHCP and DNS on various sites. They all sound like they are 2 VERY different things. Why does Windows XP's property tab allow/disallow 1... when you allow/disallow ...
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How to keep a static network local IP for all the connected machines, and still dynamically assign all the incoming ones?

I have read the manual and could find no word on this, so I'm asking here. I have a couple Macs on a wireless network, this router model: http://homesupport.cisco.com/en-us/wireless/lbc/WRT54GL Now, ...
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2answers
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How can I get a new IP from DHCP?

I connect to internet via my dorm's ethernet and IP addresses are assigned by DHCP. I tried sudo dhclient -r dhclient but that doesn't work. are there another commands i can issue? p.s: I don't ...
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3answers
387 views

My Very Own DHCP Server

My home network is as follows: Cable modem for internet, connected to a wireless router, multiple clients connected over the wireless network. My wireless router has a builtin DHCP server that assigns ...