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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47 views

Enabling DHCP via PowerShell results in 2 WiFi connections to same network

I have a VM on my network setup as a gateway that I use sometimes, while most of the time I just leave my PCs configured to use DHCP and just have everything go through the router. I had been swapping ...
3
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70 views

How do I have one OpenWRT router use the DHCP server of another OpenWRT router?

I want one router to be able to access the devices connected to the other router. However one router is connected to the internet modem by ethernet, and the other router is connected to it by wireless ...
3
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0answers
495 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 - 192.168....
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25 views

I cannot determine hostname of remote machine, but my local DHCP server can

I have 3 devices in my network - my PC and 2 self-made devices. My PC serves as DHCP server for devices. All this is connected via ethernet and switch. DHCP server shows valid hostnames of devices: ...
2
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0answers
537 views

How do i make systemd-networkd ignore DHCP pushed default route?

I want systemd-networkd ignore the default route/s pushed by DHCP on one interface. My work setup has 3 network interfaces. I have one .network file for each interface: eth0) internet [Match] Name=...
2
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216 views

OpenVPN client fails to activate pushed DHCP options for DNS and DOMAIN

OpenVPN client is connecting to OpenVPN server OK. During connection, we see the options pushed contain dhcp-option of DNS 10.0.0.2 and DOMAIN prd1.o2: Sun Aug 2 17:31:06 2015 PUSH: Received ...
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117 views

How to configure two broadband connection on the network so that if one goes down other can automatically start catering to Internet requests

Our earlier setup was 12 PCs connected via a switch. These PCs can connect to eachother via LAN. Broadband connection was via ADSL modem cum router plugged into the switch so that all PCs get internet ...
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1k views

Openwrt bridging issue between wireless and ethernet port

I've this scenario: an AP connected to the STA wirelessly, the AP is a DHCP server I have following configurations in /etc/config/network of the AP: config interface lan option ifname 'eth1 ...
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421 views

Windows 7 DHCP flooding server with requests

Am attempting to connect a Windows 7 laptop to a Debian server running dnsmasq. The Windows 7 machine doesn't seem to like the DHCP info it's getting as it re-requests it every ~10 seconds. The log ...
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350 views

How to automate running the dhclient for wwan0?

in Linux Mint 17 I have to run sudo dhclient every time I connect and disconnect to/from the Internet using a mobile broadband dongle, because otherwise the connection is declared active but when I ...
2
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0answers
507 views

Detect network clients connect and disconnect

I have a linux gateway/server, which sharing PPPoE internet connection between network users. Seeking for a proper way to detect when network clients are connected to and disconnected from the ...
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512 views

How to set up a VM gateway/DHCP and virtual network in CentOS KVM?

Today I have a working setup where the physical host runs W2k3. It has 2 physical NIC's. It runs Vmware server and I have a ClearOS VM installed acting as a FW/DHCP/DNS for both the host and all the ...
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340 views

Using BT Business Hub 3 with separate DNS server

We have a BT Business Hub 3 in our office to connect to the internet. We are a web development company and we have internal servers in our office that we want to be able to access from mobile phones ...
2
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0answers
835 views

WRT54G router with tomato firmware doesn't connect to internet if Windows 8 PC is suspended

This problem began occurring within the past couple of days, and to my knowledge I made no changes to any hardware or to my network layout. I have a Windows 8 PC connected to a gigabit switch (D-Link ...
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82 views

Telephone Server, Telephones, Printers, PCs & Servers on Individual VLAN's, DHCP clashing

Stuck at work tonight with a big issue. As a requirement for being taken over by a corporation we have been asked to stop using a firewall (juniper ssg-140) to separate our telephone system from the ...
2
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0answers
52 views

Correct usage of Windows Server on network?

I have two routers, one with dhcp turned on and the other with it off. this is a functioning home network. Now, I am trying to integrate into it a windows server. Should the windows server be doing ...
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5k views

Windows 7 machine not pulling DHCP-issued address

Not sure where to go on this one. netsh winsock reset and netsh int ip reset did not help. If I set a static IP on the machine, it communicates fine. But it won't pull a DHCP address. Here's where ...
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2k views

How do I configure Windows 7 to get its timezone from DHCP?

The DHCP protocol supports setting the time zone and the Windows DHCP Server implements this feature. The time zone on my company laptop (a member of a Windows domain) never changes when I connect to ...
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43 views

How to share files to devices connected between router 1 & router 2

Hardware: Huawei HG8247 (router 1) - router & modem combo. Linksys EA6900 (router 2) - router with 4TB hard drive attached. Goal: Share hard drive files to a laptop connected to router 1 via ...
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89 views

Wifi access point no internet connection

Situation There's a intranet with access to the internet. However, you can only gain access to this network, and therefore the internet, if your device has a whitelisted MAC address. This is no ...
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10 views

Unable to receive IP from DHCP when using ICS on Local Area Connection

The computer fails to get the IP from DHCP when I set internet connection sharing in on. (The network reads "Unidentified Network".) I have to manually turn it off and then connect again to get an IP ...
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5 views

Hardcoding dns adresses in dependance to network

I would like to save permanently dns addresses. According to link I added in /etc/dhcp/dhclient.conf proper line and in my home network everything works great. Problem is that when I am at my ...
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35 views

Why is dhclient ignoring dhclient.conf?

I have the following problem I want to solve: I have multi homed system running linux, with three interfaces. All interfaces are configured by dhcp. The DHCP client is ISC dhcp 4.2.5 The DHCP server ...
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22 views

DHCP-Enabled Router Sometimes Won't Talk to Host with Static IP

I have a Windows 7 host connected to a router running DD-WRT. The router is running a DHCP server. For reasons I don't need to detail here, I have set a static IP on the host, as opposed to ...
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36 views

IP release and renew return the same IP on a new LAN with different IP scheme

Something strange I've encountered for the first time. Windows 7 PC was movied from one LAN to another and still kept getting the same IP address from DHCP as it did at old LAN location. For example, ...
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34 views

Hostname won't resolve after setting up new server

I just completed a fresh install of Centos 7 on a PC. It is connected to the campus network, so I am not in control of the DNS server. I gave it a hostname by setting the HOSTNAME value in /etc/...
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139 views

Watchguard firewall with DHCP

I have a watchguard with the ip address of 192.168.1.254/24 (DHCP disabled) and all the user will get IP from Window 2008 DHCP Server [192.168.1.2 to 192.168.1.250] /24. Now I need to increase network ...
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61 views

Win7: PC with static IP address still requesting DHCP address

I've some PCs in my LAN, mostly Win7, to which I've configured a static IP address. Neverthless, on my DHCP server (pfSense) I see those computers with a freshly created DHCP lease! And even if I ...
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28 views

Ubuntu 12.04.5 erroneously applies static IP to all interfaces

First, I'll start by saying this is a virtual machine in VMWare Player and I’m using Ubuntu 12.04.5 instead of the newest version of Ubuntu because it’s being used in an educational environment to ...
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339 views

Verizon/ActionTec router and “MAC Address already exists in Wireless Broadband Router's database”

I'm trying to add a DHCP reservation for an old Apple G5. Some others want to use it for testing software on PowerPC, and this seems like the easiest way to ensure port forwarding does not break over ...
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43 views

How to find DHCP server while configured with the static IP

I'm doing a lot of the weird remote management, due to the specific network configuration, I often need to switch a client from static to the dynamic address. In couple cases the third party DHCP ...
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245 views

Can not connect to the internet from fresh install windows 10

So I reformatted a existing computer (Which was on win7) with Win10. I can not for the life of me connect to the internet though. I have tried the following: /release /renew Tried setting my ipv4 ...
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137 views

2 APs over Powerline Network within same IP subnet cannot see eachother?

I am having issues setting up my home network using powerline adapters. My Setup I have a Gateway, a Router, 3 Powerline ethernet adapters, and a Powerline Wifi Unit (TP-Link TLWPA4220). All of the ...
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142 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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129 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 ...
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0answers
330 views

IPv6: Cannot reach outside of LAN (OpenWrt Router connected to ISP Router through Wi-Fi)

Hello dear server expert, I would like to ask for you help for my installation. I have a Freebox Revolution (I am French and my ISP is Free). The box provides IPv4 and IPv6. Every computer connected ...
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70 views

Can I seed what DHCP options are offered on my network connection WITHOUT server access

When you get a DHCP address from a DHCP server it comes with options. I want to see all of the options set. Yes, I know that I could bug one of our extremely busy sysadmins and get them listed off to ...
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108 views

Linux IP aliasing with single DHCP and single STATIC IP address

I'm working on an embedded system with a single physical ethernet device. Using aliasing, I'd like the device configured such that one static IP address (call it s.s.s.s) is ALWAYS available. The ...
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0answers
95 views

DHCP server in separate broadcast domain and option 82

Recently studies of DHCP servers raise some questions, which I cannot find the answers to using Google. Many documentations state: "If there is only one subnet declaration, and no network interfaces ...
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0answers
141 views

2 Routers on network, can i have them do different DHCP

I'm trying to fix a network that we want to have private and public access. Currently they have Verizon service with the actiontec wireless modem/router as the main router. They have the office ...
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77 views

PC's and Laptops get IP from DHCP, but other devices don't?

We're having a strange issue. DHCP is setup on a Windows 2013 Server PC, it works fine for laptops and computers, even VoIP phones. But not for our access point (or devices connecting VIA the access ...
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61 views

Static routes in ISC DHCP

I have an Ubuntu 14.04 server at home running bind and ISC DHCP. Bind is caching from unblock-us.com so that I can get access to US Netflix content. This all works fine. I'm running into trouble ...
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43 views

Troubleshooting DHCP relay

I have a home network with two routers connected through LAN. The main router is connected to the Internet. I've had connection issues with WIFI clients walking through the house as the client doesn'...
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0answers
520 views

Why does “sudo ifconfig eth0 down” followed by “sudo ifconfig eth0 up” stop dhcp?

I am playing around in Ubuntu 12.04 trying to learn about networking. I learned that you can delete a network interface by running sudo ifconfig name_of_network_interface down However, when I do ...
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342 views

custom dhcp client on windows -manualy send discover and request packets?

My ISP has lease time 1 minute on its wifi connection. It basicly means that my system constatntly resets interface while setting same IP over and over on IP. When I set IP, gateway, netmask manualy ...
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130 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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138 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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184 views

why the ping doesn't get a reply?

I have an embedded board that has the CFE, a minimal loader. I have a host machine - linux FC16, where I am running a dhcpd server. My interface is p3p1. Here are the details of the ifcfg-p3p1. ...
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1k views

Using DHCP to get multiple IP addresses on single NIC on RedHat

I am trying to obtain multiple IP addresses using the ISC dhclient supplied with Red Hat Enterprise Linux 5 in order to provide the IPs to multiple applications, which will run on separate virtual ...
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756 views

Windows 7: can I renew DHCP lease through GUI?

In Windows XP, there was a GUI option within each network interface to renew the DHCP lease of the interface. Does Windows 7 Professional no longer offer a GUI to renew DHCP? Else, how and where do ...