Questions tagged [dhcp-server]
A DHCP server is a program to hand out Dynamic Host Configuration Protocol leases.
200 questions
0 votes
0 answers
39 views
Send traffic from one netadapter to another, but different
I have a Windows 10 host with two ethernet adapters: one going to my router, the other is hosting a DHCP server, and an internal network of PCs. I want to allow the PCs to access the web through the ...
6 votes
2 answers
2k views
Finding for duplicate active DHCP servers on local network
I'm experiencing weird behaviour in our local network. We have two devices, which gets the same IP address. After investigation I have found the IP address is out of range configured on our primary ...
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0 votes
0 answers
96 views
IPv6 dhcpd+radvd routing issue
I have /56 from my ISP, that works well configured statically and routed via MikroTik, however I have some devices like TVs, Chromecasts I don't want to obtain IPv6 addresses and unfortunately there ...
- 101
0 votes
0 answers
65 views
Issue accessing IPs on network between Static IP and DHCP reserved VMs
I recently moved my dhcp server over to my PiHole as I was running out of IPs to add to the dhcp reservation table on my router. That router, an Asus, is running the merlin custom firmware and is ...
0 votes
1 answer
309 views
Static DHCP working over 2.4Ghz but not on 5Ghz WiFi
I am trying to learn assigning static IP address to my PC. I use zyxel wifi router and added my mac address for static ip assignment. Now my router has two separate bands 2.4Ghz and 5Ghz. This is the ...
0 votes
1 answer
141 views
How do respond to BOOTP requests using the TFTP daemon with Fedora?
I'm trying to boot a few embedded machines over an RNDIS network link (USB) and I can't seem to get the TFTP server daemon to respond to the BOOTP requests. I can see the BOOTP request packet being ...
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0 votes
0 answers
514 views
Unable to connect to internet in Kali Linux 2024.2 after the error "Your Network is probably not using the DHCP protocol."
I can't connect to my internet in Kali Linux. I installed Kali on a Virtual Machine using Oracle VM VirtualBox. During the installation I encountered the error: "Your Network is probably not ...
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0 votes
1 answer
1k views
Basic kea-dhcp4 server setup failure, likely caused by wrong config file
Setup Intended setup: <router>----ethernet cable ---<linux PC> Router IP: 192.168.1.1 (DHCP relay, DHCP Server IP: 192.168.1.2) Linux PC (hosting the server) Static IP: 192.168.1.2 OS: ...
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0 votes
1 answer
130 views
dhcp6 server config problems when match if option dhcp6.vendor-class
The complete content of the client's Vendor Class data is as follows: Vendor Class Option: Vendor Class (16) Length: 38 Value: 000001570020505845436c69656e743a417263683a303030... Enterprise ID: Intel ...
0 votes
1 answer
662 views
Trying to run Pi-hole as a DHCP server in Docker but lighttpd service conflicts on port 80 with OctoPrint
I need help setting up Pi-Hole in Docker running alongside OctoPrint in Docker. I did the initial setup for Pi-Hole in Docker: Pulled the Pi-Hole container Ran the following bash script: #!/bin/bash ...
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0 votes
1 answer
447 views
DHCP server clock isn't sync with current date; would it affect leases with a 0 (infinite) duration?
I have a question regarding DHCP server where the clock of the server isn't set to the current date? All the leases are set to infinite, now when the DHCP server time is synced using NTP to the ...
1 vote
0 answers
1k views
isc-dhcp-server configuration issues
I use Debian as a router and use dhcpv6 server on ens19 to get the IPv6 address. Now I want to use DHCPv6/SLAAC to assign IPv6 addresses to other devices on ens18. But dhcpd6.conf confused me. The ...
- 11
0 votes
1 answer
1k views
Raspberry Pi DHCP server loses its static address
I am using a Raspberry Pi 3B running Pi-OS 10.13 (kernel 5.10.103-v7+). I am running bind9 to provide DNS services for my LAN and isc-dhcp-server to provide DHCP services for my LAN. The Pi is ...
- 1,097
1 vote
0 answers
322 views
Linux dnsmasq and Windows
I have a Pi Buster OS (debian variant) in which I use dnsmasq and it is configured as a DHCP server. I have Pi connected to laptop like a null mode. When Pi starts up, it is all good and PC soon sees ...
0 votes
1 answer
1k views
Podman container not getting ip from macvlan DHCP, what is wrong with my config?
I'm not sure what I'm doing wrong. I know my DHCP server is running and working, I'm giving out IPs to other non-macvlan network devices... basically everything connecting to my wifi AP. What's wrong ...
- 436
0 votes
1 answer
603 views
Connect a Label Printer via LAN Port directly to PC in Windows 11
The problem: I have 2 identical Label printers RP410. If I connect them via USB I can be lucky if both are correctly installed... but most of the time only one USB virtual printer port is visible (...
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-3 votes
2 answers
1k views
Is DHCP server started and running?
I'm using Windows 10. I need to figure out whether a DHCP server is started and running. I used ipconfig /all command and the output says that the DHCP Server is 192.168.4.1. I don't know if that ...
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1 vote
2 answers
2k views
How can I overwrite the default gateway which radvd is advertising
I have flat network with 7 nodes, one of the nodes act as the DHCPv6 server and also runs radvd. When used like that, radvd will use the helper node (local-link) IP as the gateway when sending the RA. ...
- 519
0 votes
0 answers
201 views
Windows server ipv6 dhcp
I'm sorry but i'm stuck since a lot of time now. I tried to make a scope for ipv6 at my home, i have a windows server 2019 machine that manages a lot of things. I don't understand why but i can't have ...
- 111
0 votes
0 answers
154 views
dhcpd leased a permanent address - why?
I'm using isc-dchp-server on my home network. Today my only desktop client wasn't able to recieve an IP address from the dhcpd server, which is strange because it has a reserved address in dhcpd.conf: ...
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-1 votes
1 answer
821 views
Is it possible to force the use of DHCP on Wireless connections? (i.e. not on Wired ones)
I have an Asus router AC87U. Is it possible to block wireless connection for devices that are configured with a static IP while still allowing LAN connections for devices that are also configured with ...
- 185
0 votes
2 answers
78 views
Is there a chance for a laptop with a static IP to get connected to a random Wifi network?
Is there a chance for a laptop with a static IP to get connected to a random Wifi network? For example: a laptop is configured with a static IP address of 192.168.1.5 and attempts to connect to a ...
- 185
0 votes
1 answer
110 views
Resolving private ip using device name/hostname
I am programming for a raspberry pi headless setup and I and my cross-compiling toolchain ssh into it very frequently. The device name it registers with to my wifi router is "rpi" and ...
- 101
0 votes
1 answer
1k views
Deploying dhcp-server on router: is netplan involved?
I have a PC that acts as my home router. It has a NIC to the WAN. It has a NIC to the LAN. It has a NIC to the WAP. It also has a bridge that spans the LAN/WAP. Now, I want this router to dispense ...
- 237
0 votes
0 answers
119 views
Disable another DHCP server
I'm using a home router with several devices connected to it. DHCP area is something like 192.168.2.50 to 192.168.2.150. Default gateway is 192.168.2.1. However, when I connect to the network, I was ...
- 11
0 votes
0 answers
147 views
Determine/Configure which IP address gets offered next by a DHCP server?
I need a way to determine the next IP address a DHCP server will offer. RFC 2131 states: Each server may respond with a DHCPOFFER message that includes an available network address in the 'yiaddr' ...
- 13
0 votes
1 answer
2k views
How to make DHCP clients prefer IPv4 DNS
I have a SOHO network with a split DNS configuraiton, and I have configured my router's (a Huawei H122-373) DHCP to provide my DNS as the primary DNS. However I have no control on the DHCPv6 of my ...
- 101
1 vote
1 answer
987 views
Cloned Ubuntu VMs in vSphere get same IP, despite resetting /etc/machine && /var/lib/dbus/machine-id
vSphere 7.0 + Ubuntu 18 / 20 (tried both) I am trying the steps from this blog post: https://blah.cloud/kubernetes/creating-an-ubuntu-18-04-lts-cloud-image-for-cloning-on-vmware/ I also tried this ...
- 444
0 votes
1 answer
600 views
Will Multiple Routers (Using Split-DHCPs for IP grouping) for Smart Home separation cause problems?
I'm reconfiguring my home Wi-Fi & I'm trying to find the best way to deal with my Smart Home devices. I have ≈70 Smart Home devices, from a Google Home Mini in each room, Smart thermostat, smart ...
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1 vote
0 answers
2k views
Issues trying to set up a Windows 10 PC as a DHCP server
I have a situation where I have a Windows 10 PC that is acting as a DHCP server on a private network with no internet connection. The PC has a second ethernet adapter that is connected to the internet ...
- 11
0 votes
1 answer
84 views
Linux Router Middlebox Failing to Initialize Internet Connection
I'm trying to configure a Linux machine as a "middlebox router" that allows a connecting client machine to use the internet connection of the machine itself. It has two physical ethernet ...
- 101
2 votes
1 answer
1k views
ISC DHCPD: Dynamic IP Range for all Members of Class matched by Hardware Address
I have a DHCP server (Version: isc-dhcpd-4.3.5) running on Debian and managing multiple subnets, all running on virtual interfaces eth1:1, eth1:2, etc. over the same physical interface eth1. All ...
- 147
3 votes
1 answer
6k views
How do you view DHCP servers within VirtualBox?
I set up a DHCP server within VirtualBox long ago and I wish to remove it. The VBoxManage dhcpserver does not have an option to list the servers -- only remove, add, or modify. I can't "tab" ...
- 101
0 votes
1 answer
331 views
how can i access device on dhcp server from outer net
i made DHCP server on rpi with following settings: for interface eth1: interface eth1 static ip_address=192.168.1.1/20 static routers=192.168.1.0 and for dnsmasq.config interface=eth1 bind-interfaces ...
1 vote
1 answer
2k views
Virtualbox dhcp server not able to find vm to assign ip address
I have been trying to run two virtual machines using Oracle Virtualbox. virtualbox is able to assign ip address to one vm, but showing error for the second vm. Tried to get the ip address of the two ...
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1 vote
1 answer
2k views
Is it possible to configure Sonicwall TZ350 to provide DNS for DHCP clients?
I've got a SonicWall TZ350, and I've set it up to provide DHCP to a local LAN (192.168.168.X). Right now, when a DHCP client on the local lan does nslookup of another client, it fails because the name ...
- 4,077
0 votes
1 answer
2k views
How to disable windows desktop 10 hotspot's dhcp server?
I am connected via ethernet to a router which gives me an IP via dhcp. I want to share that dhcp of the real router via wifi of my laptop to devices around. My plan is to bridge ethernet and wifi, get ...
- 101
0 votes
1 answer
450 views
Are there no DNS entries for static pi-hole dhcp hostnames?
A pi-hole instance is also acting as the DHCP server in my network. I assigned static IP addresses for some of my devices (eg. an octopi server with Hostname "octopi" and IP address "...
- 111
0 votes
0 answers
45 views
Hyperactive DHCP and related issues
I have a simple home network - modem --> Nighthawk router --> D-Link 24 port switch --> bunch of clients (including three Ubiquiti APs - nobody uses the router wifi at all). I put the ...
- 143
0 votes
0 answers
154 views
Cannot receive IP from router bridge
I have a "router" that is basically a computer with 4 network ports and Linux Centos installed that I will be calling Centos-Router from now on. My operator cable router is configured with ...
0 votes
0 answers
200 views
Is there a way to know what public ip addresses my pc had last months or year?
Is there a way to know what public ip addresses my pc had last months or year ? Are they saved somewhere ? Thanks in advance
1 vote
1 answer
2k views
DHCP Options in VMware Fusion
I tried to get my DHCP server on vmnet2 to include an option for a particular host, so I added this configuration below the "DO NOT MODIFY SECTION" block in the relevant config file (/...
- 204
0 votes
2 answers
703 views
router is assigning a different private ip address for my intranet
I have a rog ag11000 router setup as the main router, and also have a DDWrt linksys router connected to it via lan cable and configured to work as an extender (DHCP server off). The gateway ip address ...
0 votes
0 answers
170 views
Can a DHCP Client tell the DHCP Server not to hand him a specific IP address?
I have a device that has two ports and one always requires static IP address "X". The other port can be connected to a LAN for internet access. Is it possible that when that port is ...
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9 votes
1 answer
98k views
Can I configure my Windows 10 PC as a DHCP server on a local switch?
I'm creating a local network that I would like to have DHCP capability. I have a primary Windows 10 PC that will be on the local network full time. Is it possible to configure this PC as a DHCP server ...
- 247
0 votes
2 answers
10k views
Multiple interfaces match the same subnet - how to fix this?
I have a raspberry pi 2 with a lan interface (eth0) and wan interface (wlan0)- usb wifi adapter. My OS is raspbian. I want to use my raspberry as a wifi AP. So, it is necessary to have a ics-dhcp-...
- 23
0 votes
1 answer
659 views
Configuring DHCP for Windows 10 Network Installations
While following a tutorial for PXE booting a Windows 10 Installation Media, the requirements mention using a DHCP server to do what seems to me to be intercept the DHCP broadcast and instead assign ...
- 21
0 votes
1 answer
931 views
How can I reserve a static IP address for my PC on a TPLINK Wireless N ADSL2+ Modem Router?
I am trying to add a static IP address for my PC. I have tried to search on Google, and I got on this page on TP-LINK official website. Unfortunately, the screenshots in the article shows a very ...
15 votes
3 answers
13k views
Does a DHCP server really check for conflicts using "ping"?
I read the following excerpt in a CCNA prep book and it doesn't sit well with me: So during IP address assignment, a DHCP server checks for conflicts using the Ping program to test the availability ...
- 2,720
1 vote
1 answer
3k views
How should a dhcp server allocate only one ip address?
How should I configure the dhcpd.conf file so the DHCP server would allocate only one IP address from a subnet to the first VM that is connecting to the DHCP server? Thank you. Operating system: ...
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