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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1answer
3k views

Default to Static IP when no DHCP is found

I've setup a DHCP server on one of my centos boxes, and I have several computers that are going to connect (also centos) and hopefully make use of the DHCP. On start-up I'd like to check whether a ...
1
vote
2answers
716 views

Blocking or Disabling Rogue Routers

We have a medium sized network and from time to time something bad happens. Once it was a router configured to assign IPs via DHCP that did not match our network mask, thus making all clients unable ...
2
votes
1answer
2k views

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, ...
0
votes
1answer
1k views

Bridge is not forwarding DHCP reply

My setup is as following: Using kvm and tap-interfaces I have two vms running. The two tap-interfaces are connected via a bridge. On tap0 I have a DHCP-server running, on tap1 I executed a "dhclient". ...
2
votes
3answers
11k views

dhcp option 252 what is it?

All over the internet I see example of how to set up dhcpd with WAPD proxy auto configuration using DHCP. In the /etc/dhcpd.conf file There are statements like this. option wpad code 252; "...
5
votes
7answers
28k views

DD-WRT serving additional DNS servers instead of just the router’s IP

I have a DD-WRT (using DD-WRT v24SP2-MULTI (03/21/11) std) router set up with DNSMasq to resolve certain domains to internal addresses and pass everything else thru. The router itself is configured to ...
3
votes
2answers
201 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 ...
0
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3answers
437 views

Use OpenDNS when ISP hardcodes DNS

My ISP gave me a router with the DHCP / DNS settings hard coded. They blocked access to it, so there's no way for me to change it. However I have a WLAN router that can do DHCP. Can I set up my WLAN'...
2
votes
3answers
17k 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 ...
0
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0answers
632 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 ...
1
vote
1answer
369 views

SSH client on Windows 7 not connecting to linux sshd via hostname

I have a straightforward home network setup where everything is routed via the broadband router. I have a Windows 7 box and a Gentoo linux (currently) livecd box connected via power over ethernet to ...
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vote
3answers
585 views

Windows 7 dhcp issues from windows 2008 server

I am having some troubles with mapped network drives on Windows 7. We have several Windows 7 machines that are trying to automatically connect to network shares (that are on a Windows 2008 server and ...
0
votes
1answer
405 views

Get Internal IP Address From DHCP Hostname [duplicate]

Possible Duplicate: How access network computers by name I would like to try and get an internal ip address of one of the computers on my network. The reason for this is I have a little home ...
1
vote
1answer
2k views

Disable DHCP on airport when it's an Access Point

I have airport access points that are linked to my main router. I set up DHCP on the router and I just want to use the airport as an access point, but if I put it in this mode it enables DHCP by ...
2
votes
3answers
1k 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 ...
0
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2answers
554 views

dhcp.lease showing strange entries

lease 172.16.0.174 { starts 2 2011/11/22 10:23:11; ends 3 2011/11/23 10:23:11; binding state active; next binding state free; hardware ethernet 6c:50:4d:0e:c8:c0; uid "\000cisco-6c50.4d0e....
0
votes
0answers
1k 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 ...
3
votes
2answers
653 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 ...
2
votes
1answer
7k views

Unique IP address settings (static/dhcp) per wireless network? [duplicate]

Possible Duplicate: Automatically picking network settings based on the wifi network Is this possible in Windows 7? For example, I want to use Static IP A with Network A, DHCP with Network B, ...
10
votes
3answers
8k views

Unable to resolve .foo.local domain names

My workplace has an intranet with domain names like server01.foo.local, server02.foo.local, etc. I recently booted the Fedora 16 live environment to test it out and discovered that these domain names ...
2
votes
2answers
1k views

Using multiple interfaces on a RHEL5.5 x64 machine

I am trying to use a statically-assigned address on one interface (eth1) of a server and have a dhcp-assigned address on another interface (eth2) on the same subnet (172.17.11.0/24). When I setup a ...
2
votes
2answers
4k views

DHCP IP address have access to the internet but static IP address don't behind a router

I have three PCs 192.168.1.100 (DHCP) 192.168.1.101 (DHCP) 192.168.1.113 (Static) One router (SMC SMC8014WN) 192.168.1.1 The .100 and .101 both have access to the internet. The .113 does ...
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vote
2answers
377 views

How to use DSL modem along with router to have two external IPs

I had an issue with my DSL connection (I have CenturyLink) and after talking to one of the line engineers at Centurylink he mentioned that per DSL line, you were allowed two external IPs. He said if ...
0
votes
0answers
353 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, ...
3
votes
2answers
578 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 ...
6
votes
2answers
8k views

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 ...
1
vote
0answers
559 views

How to set custom DHCP option in dhcp request in Windows XP?

DHCP client in Windows XP has built in options. One of them is Requested IP Address. How to set custom IP address into that field? Background: In my local network there is DHCP server that ...
1
vote
1answer
2k views

Two routers with DHCP?

My current network setup is like this: SKY Netgear Wireless Router (Downstairs) ----> Homeplug ----> DG834N Netgear Wireless Router (Upstairs) What I would like is to have DHCP enabled on both ...
2
votes
1answer
1k views

Switch between DHCP and static IP

My laptop needs to use DHCP at home and a static IP at work. As far as I can tell, there's no way to flip between one and the other quickly - I'll have to manually configure the network connection ...
1
vote
3answers
1k views

Wireless network for a small apartment building with two modems and three routers (DHCP)?

I've seen some questions that were similar to this, such as: Multiple access points for the same SSID? But I'm dealing with a bit of a special case, in that the internet provider for this apartment ...
2
votes
1answer
411 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 ...
0
votes
1answer
1k views

DHCPREQUEST not replied

I have installed wpa_supplicant on Debian Squeeze so i can connect to my home and the school WiFi network. My home network is secured with WPA2 AES and I can connect to this network without any ...
9
votes
4answers
13k views

How to configure `eth0` to retry `dhclient` when unplugged and replugged?

I'm working on a linux gadget. I want it to get DHCP if I plug in the network cable after it has booted up already or if the network cable unplugged and replugged. One solution is to run a script ...
2
votes
2answers
8k views

Can't ping network machines by hostname when behind wireless router on university network (only IP)

I have a TP-LINK wireless router (TL-WR340G) that is connected to my university LAN via an Ethernet cable (which assigns a dynamic IP address to each device connected). My Windows 7 computer is behind ...
3
votes
1answer
391 views

Is an RDNSS or DHCPv6 server allowed to distribute a link-local IP address as DNS server?

And if so, how is this supposed to work? Is the client supposed to attach the interface identifier himself, based on the interface the assignment came through?
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vote
3answers
2k views

host(1) command only uses first nameserver?

According to the man page, host ought to query "the server or servers listed in /etc/resolv.conf," but it only uses the first entry in that file: thefourthtower:$cat /etc/resolv.conf nameserver 8.8.8....
4
votes
2answers
752 views

how to broadcast a PXE server like Trinity Rescue Kit

I would like to set up a portable PXE server for diagnostic purposes. The issue is that I won't always have access to the DHCP server, or the router itself (sometimes a home router) doesn't have an ...
1
vote
2answers
9k views

How to disable disclosing a computer name to a network?

I don't use (I've disabled it by normal means and blocked the ports with personal a firewall) Windows Networking (CIFS aka NetBIOS aka SMB etc), but my PC has a name as it seems to be mandatory in ...
8
votes
1answer
2k views

Can I add DNS but keep those provided by DHCP in OSX?

I'm trying to add an additional DNS entry in my OSX network preferences but I want to keep the DNS provided by DHCP. These show up in gray, but when I click the plus button below them, they disappear ...
0
votes
1answer
722 views

DHCP setting an IP on router but APIPA on computer

I took my computer with me while house sitting. Now back at home, DHCP is setting an IP on the router, but I get a 169.x.x.x IP on the computer. I've tried using a static IP but was unable to connect ...
2
votes
2answers
1k views

Does it make sense having a separate DHCP server

I used to use Amahi, and Amahi by default has a built-in DHCP and DNS servers switched on. Now, I removed Amahi, and am assembling my own home server using Ubuntu server. My setup: an ADSL modem / ...
3
votes
2answers
1k 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) > ...
2
votes
2answers
212 views

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 ...
5
votes
2answers
1k views

What are the benefits of dynamic leased IP addresses in a home network?

I have a small network at home with a router, a printer, a NAS and 4 PCs. My router allows full DHCP management and I have set my router, NAS and printer to have static IP addresses (reserved fixed ...
11
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3answers
118k views

How to find my DHCP server IP address via a command prompt in Windows?

Linux has easy commands to find the DHCP server IP address via a command prompt. Is there anything for Windows?
2
votes
1answer
427 views

Windows XP Internet Issue

I'm trying to fix a computer running XP for a friend, and it is being a pain. It is on the same wifi as this Mac I'm using to type this. It says it is connected and the signal strength is excellant. ...
5
votes
2answers
7k views

dnsmasq without altering /etc/hosts file manually

I've trying to get dnsmasq working as a combined dns and dhcp server. It's infuriating so far... In short, the DNS works fine for anything added to /etc/hosts, and the dhcp works fine, but the dhcp is ...
9
votes
6answers
16k 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, ...
4
votes
2answers
8k views

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 ...
3
votes
4answers
3k 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 ...