Dynamic Host Configuration Protocol; allows computers on the same network to automatically obtain unique IP addresses and other network configuration parameters.

learn more… | top users | synonyms

0
votes
0answers
35 views

Debian 8.1. Needs restart eth0 iface to get connection

I have a strange problem with connection to Internet in my Debian 8.1. I change content file /etc/network/interfaces to iface lo inet loopback auto eth0 iface eth0 inet dhcp Now if I restart system ...
0
votes
1answer
32 views

Can anyone please explain usage of few settings in my Dlink Adsl modem+router?

The router is Dlink 2730U. The documentation doesn't list the usage and function. DHCP server settings list both Lan and wan ports... please see pic Not sure, how WAN ports are used in DHCP? ...
0
votes
0answers
29 views

Distinguish between DNS-requests from local network and internet

I am using DNSmasq both for my local clients and some internet services. One service I provide is a dynDNS server. It receives IP updates via HTTP and writes it as simple hosts file but without ...
1
vote
1answer
29 views

Trying to find & get a fixed DNS?

I'm trying to find our DNS details to specify in our printer so it can send scan docs to email. Running a cmd prompt is showing details starting with fe80::c6ea: instead of a proper DNS address. Any ...
1
vote
0answers
52 views

How to set up 10 routers to form one wireless network? [closed]

So we have set up 10 routers to form one big wireless network with 1 SSID. This network has many issues. Devices are working one day, and the other day they are offline for no reason. Some devices ...
0
votes
1answer
67 views

How to use my own router as DHCP server when ISP modem router does not support bridge?

I'm currently using a GPON router (ZTE F660) from my ISP. I'm planning to purchase TP-LINK N600 TL-WDR3600 as secondary router and use that instead for my LAN and WLAN because the GPON router (main ...
-1
votes
1answer
29 views

A br0 bridge interface appeared and mess up my network config

Problem This afternoon, I launched my openSUSE Leap 42.1 like everyday and then I quickly note that my networking was'nt working correctly. A quick ifconfig show me that a new br0 interface show up. ...
0
votes
1answer
196 views

What's better RADVD or DHCPv6 for local network with IPv6?

today I got a new router and now I want to enable IPv6 on my network. But the thing is I don't know what the better option is since TP-Link gives me two ways to get IPv6 on my network. The first ...
1
vote
1answer
45 views

Hostname won't resolve even with router DHCP reservation?

I'm setting up a simple Linux home server and I want to be able to access it over my LAN using it's hostname. Even after reading through this really informative post I'm still having issues connecting ...
0
votes
0answers
22 views

Client not getting connected with reserved IP

We have DHCP running on Server 2012 R2 and reserved IP for fileserver in our domain. While booting after weekend, it is found that the reservation is inactive. The reservation was deleted and found ...
3
votes
1answer
44 views

Proper way to connect access point to a router (both potentially using DHCP)?

So this is baffling to me for some reason, and I'm sure the solution is quite simple. I have these three devices that make up my current home network: Arris SB6183 Cable Modem D-Link DIR-879 Router ...
0
votes
1answer
11 views

Static or Dynamic addresses when connecting to a SAN

Best practices question: I have many computers connected, in the same rack, to a SAN. The SAN talks iSCSI to the network, and will need to have an IP address to serve out storage. The question is if ...
0
votes
1answer
31 views

Is it possible that a cable router (Ethernet WAN socket) can allow DHCP passthrough?

I have a problem but not sure where it originates... I've set up a very small business network and they've got an old Belkin cable router (F5D7231-4) that connects to the building LAN. The building ...
0
votes
2answers
48 views

pulling a second unknown IP address

We currently have several devices on our network. In the last couple of days, a few of those devices are obtaining IP address in another IP range from an unknown source. Today I left for about an ...
-1
votes
1answer
77 views

NSlookup of static IP showing computer name from DHCP range

I am part of a network with 60 or so maximum devices. Just a class C subnet where x.x.x.1-100 are statically addressed hardware. 101-150 are also statically assigned addresses for thinclients and ...
0
votes
1answer
38 views

Cisco 3600 not allocating DHCP addresses

We've purchased a cisco router 3600 for use as a DHCP server and I have configured it to test like this: Current configuration : 1292 bytes ! version 12.4 service timestamps debug datetime msec ...
0
votes
0answers
32 views

DHCP: Temporarily Reserve An IP to A specific Mac or machine for a specifc time

I m using OPENWRT DNSMASQ/ every machine should have a Dynamic IP.(it is OK) after that he gets a captive portal page to enter credentials. ( it is done too) Question is If credential is ...
0
votes
0answers
35 views

Extend MI424WR Rev I wifi range with Netgear R6200v2

I'm a fios customer and I currently have 2 of MI424WR Rev I routers and a netgear r6200v2 router. I'm currently using one of the MI424WR Rev I to connect to Optical Network Terminal (ONT) and it gets ...
0
votes
1answer
76 views

Wifi stops working after a while unless I renew DHCP (MB Pro Retina, Late 2013)

It started a while back. I think it happened when I updated to Yosemite, it happened when I updated to El Capitan. Wifi works fine for less than half an hour, then it stops working. It doesn't get ...
0
votes
0answers
42 views

Upgrading from isc-dhcpd-4.1.1-P1 to isc-dhcpd-4.3.3-P1

I am looking to update my DHCP servers with failover associations configured, running isc-dhcpd-4.1.1-P1 to isc-dhcpd-4.3.3.3-P1. I found documentation on ISC's site when upgrading from 3.X to 4.X ...
0
votes
1answer
37 views

Expanding dhcp range on DC

I work for a relatively small company and we are starting to run out of ip addresses for our DHCP server. We currently have a scope of 192.168.10.0/24. This was all set up by an IT company 3 years ...
0
votes
1answer
344 views

Motorola router breaks on auto-upgrade, Comcast denies responsibility, how to fix?

I have a Motorola SBG6580 router. A few days ago, I noticed my wireless connection stopped working and the internal IP address I had for one of my devices stopped working, even though I had ...
0
votes
1answer
339 views

How can I bridge my router to my wired LAN over WiFi?

I have a cable modem connected to a WiFi router. I have the router configured to serve DHCP. Due to the layout of my house, I cannot physically connect my home wired LAN to the router. I was hoping ...
1
vote
0answers
70 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 ...
1
vote
1answer
65 views

dhclient times out (wired only)

(This is also posted on fedoraforum.org, but it may be interesting to people who use other distros.) Hey all, I've been struggling with trying to connect my Dell Inspiron 17 7731 running Fedora 23 ...
2
votes
0answers
454 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] ...
0
votes
0answers
43 views

dhcp server or routing rules on a lan with internet server

I have two machines : Imac with Mac OS 10.9.5 & a Debian 8 server headless both have one ethernet interface and one firewire. The DHCP is still on the router and has statics ip address, the two ...
1
vote
1answer
76 views

How does a NAT router obtain its IP address?

I have a question about DHCP and NAT. I know NAT translates local IP addresses and ports into a single IP address and specific ports that can be used to communicate with the Internet. I also know ...
0
votes
2answers
53 views

How to see DHCP boot setup in wireshark?

My client tries to boot wrong file with DHCP and I'd like to debug it. My previous configuration was to boot with lpxelinux.0 file but now I changed it to pxelinux.0. But client is still looking for ...
0
votes
2answers
33 views

Increasing network range for new VOIP users

Our office using 192.168.1.0 /24 for DHCP 120 users and reserved 20 IP for servers and 10 IP for network printers. Now management decided to upgrade to VOIP phones for all users so I need to make ...
2
votes
1answer
68 views

Get IP from DHCP server from other machine in Internal Network

I have two virtual machines: Debian (Router) with one Bridged Adapter and three Internal Network adapters Ubuntu with one Internal Network adapter I installed on Debian DHCP server, I'd like ...
0
votes
0answers
90 views

Wireless Network Connection not getting IP address assigned by DHCP

I have an issue with my Windows 7 laptop such that, whenever I go to change IPv4 settings through respective "Network Connection property" dialogue boxes for each network interface, I always get this ...
2
votes
1answer
49 views

Does the DHCP server allocates static IPs?

I have a small DHCP server with a 50 IP scope. When I try to get an IP to my device using Ethernet I get a static IP. How can I solve this?
0
votes
0answers
14 views

Sharing internet connection over LAN (Windows 8)

I have: PC (Windows 8) connected to the internet via WLAN. POS payment terminal connected to the PC via LAN (UTP). I would like to share internet connection to the POS payment terminal. The PC ...
0
votes
0answers
122 views

Pass the ISP DNS to your DHCP clients on OpenWRT

Basically I need my DCHP clients to have their DNS pointing to the ISP ones rather than pointing to the OpenWRT/Router's IP. On (latest) DD-WRT, you can check the option to disable DNSMasq local DNS, ...
0
votes
1answer
55 views

AP client mode DHCP

i got a Netgear WN604 which i want to use in client mode to provide internet connection to multiple wired pcs and powerline extenders but i got troubles with DHCP ip assignment. Let me explain: The ...
3
votes
0answers
68 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 ...
0
votes
1answer
140 views

ip conflict on user pc and bad address shown on DHCP server after installing Wireless router

Our office has around 250 users and DHCP server (192.168.1.1 /24) and primary DNS server(192.168.1.2 /24) installed at office. I just configured linksys Wireless router(192.168.2.1 /24) for mobile ...
4
votes
2answers
203 views

dhclient unicast DHCPREQUEST excessive logs

I am using centos 7 with dhclient 4.2.5: $ uname -a Linux hostname 3.10.0-229.el7.x86_64 #1 SMP Fri Mar 6 11:36:42 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux $ dhclient -V Internet Systems Consortium ...
0
votes
0answers
73 views

Can't get Pi/Debian to renew DHCP on boot

I recently tried getting my Raspberri Pi/Debian going with WiFi. That was a bust and seemed shaky, so I want to go back to regular wired. But not I cannot get a eth0 connection going for some reason. ...
0
votes
0answers
110 views

Resetting Mikrotik RouterBoard 750GL

I've messed up some settings and now trying to reset this router, but the problem is, i can't. Or at least it seems i can't. I've tried to use reset button (turning it off, holding reset button, ...
16
votes
1answer
731 views

Did my network just get hacked?

Something very strange just happened. A long story short, I went on to my computer and it told me that access was blocked to this PC. So I tried to go to 192.168.1.1, but it didn't work on my blocked ...
1
vote
2answers
44 views

Wireless static IP configuration

I'm using Debian and I have trouble assigning a static IP to my computer to my local wireless network. I've setup my configuration files in my computer correctly but that does not seem to work. ...
2
votes
2answers
222 views

Using dhcp and static ip on same nic on linux with systemd-networkd

I have a portabel device that sometimes needs connection to internet(to update) but will mostly be used directly connected to a laptop via ethernet cable. I want my users to have the plug and play ...
0
votes
0answers
163 views

D-Link DSL2740u router shortfalls

I have a D-Link router (DSL-2740U) Hardware version: V1 Firmware Version: ME_1.02 I'm really struggling to get my home network set up the way that I want. The IP range is 192.1668.0/23 with my ...
0
votes
0answers
45 views

How to remotely set up IP cameras?

I'm trying to set up a CCTV system at my parents' house. Most of the networking is done already (I think), but I still need to set up most of the ~30 cameras. This is the network topology: internet ...
1
vote
0answers
55 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 ...
0
votes
0answers
169 views

Wireless lease always expiring. Asus ADSL N10E modem

So heres the problem. My wireless modem doesn't connect properly with my Mac. I have some 6 devices that connect wirelessly to the same modem and the strange thing is, all Windows laptops work ...
0
votes
1answer
24 views

Static network want to add guest dhcp router

My work would like me to add a guest wireless for our customers. The problem I have is the system they have set up is all static ip's. How can I add a wireless router to the network so guests can ...
0
votes
0answers
53 views

Access Router without DHCP in network

I have a router with enabled DHCP server. I also have multiple switches and Wlan access points, which are cheap TP-Link Wlan routers without a DHCP server connected to the network with a LAN port. ...