Questions tagged [dhcp-server]
A DHCP server is a program to hand out Dynamic Host Configuration Protocol leases.
188
questions
1
vote
0
answers
58
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
0
answers
231
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 ...
- 426
0
votes
1
answer
58
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 (...
- 3
-3
votes
2
answers
112
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 ...
- 21
0
votes
1
answer
193
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.
...
- 491
0
votes
0
answers
96
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
29
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:
...
- 1
-1
votes
1
answer
161
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 ...
- 195
0
votes
2
answers
46
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 ...
- 195
0
votes
1
answer
52
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
323
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 ...
- 207
0
votes
0
answers
51
views
Scan DHCP logs on all DHCP servers in domain for a specific IP
I need to find out what was a computer name using a specific IP in a specific time. But there are dozens of DHCP servers in the domain and I don't know which server has the relevant subnet in scope. ...
- 97
0
votes
0
answers
71
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
64
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
590
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
417
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 ...
- 394
0
votes
1
answer
269
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 ...
1
vote
0
answers
1k
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
51
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
260
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
2
votes
1
answer
3k
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" ...
0
votes
1
answer
108
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
1k
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 ...
- 11
1
vote
1
answer
907
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 ...
- 3,968
0
votes
1
answer
1k
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
348
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 "...
- 41
0
votes
0
answers
37
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 ...
- 133
0
votes
0
answers
80
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
61
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
967
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
285
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
100
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 ...
- 101
7
votes
1
answer
58k
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 ...
- 217
0
votes
2
answers
5k
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
265
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 ...
0
votes
1
answer
441
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
8k
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 ...
- 2,680
1
vote
1
answer
1k
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: ...
- 31
0
votes
1
answer
2k
views
how to setup IPv6 ULA advertisement and -DHCPv6 in home network?
I am on ArchLinux, and I am running IPv6 in my local home network. IPv6-Internet comes with my fritz.box and works well with all clients.
On my home server, I set up radvd to advertise my local ULA ...
- 399
0
votes
0
answers
43
views
DHCP packets cut off after configuring VLANs on switch
I initially set up my switch taking inputs from my router, modem, and all network devices... and quickly found that was a bad idea when I tested DHCP results and found I was getting responses from the ...
- 101
1
vote
1
answer
2k
views
Netplan/DHCP Config: Forwarding requests from one bridge port to another
im trying to configure a bridge network on Ubuntu 20.04. There are 4 ethernet ports in the brige. This is how the corresponding netplan config looks like:
network:
version: 2
ethernets:
...
- 25
0
votes
2
answers
639
views
Configuring ASUS Router to use custom Bind9 and DHCPd on LAN
Let’s say I have a Raspberry Pi set up to be a client on the network and I want it to use 192.168.2.2 while the router uses 192.168.2.1, what’s the necessary router configuration to use the Pi’s dhcpd ...
- 187
0
votes
0
answers
208
views
DHCP issues with two wireless APs and two different SSIDs on the same network
I have a small home network with a pfSense router running DHCP and DNS, as well as other services. This is directly connected to the internet via a modem, and then the other side connects to a switch.
...
- 113
0
votes
2
answers
4k
views
DHCP Lease time renewal with ISP
Recently my ISP had a major outage and since they came back up I have been having issues with DHCP leases. I am currently using a DLink router with FreshTomato and there were no such issues before ...
- 3
-1
votes
2
answers
599
views
DHCP reservation is active but user's laptop has a different IP
I am learning how to use Windows Server 2016. I created a Server 2016 and Windows 10 client in Oracle VM, set up AD DC, DHCP server and created a reservation for a client. The client computer is in AD ...
- 1
1
vote
0
answers
554
views
Ubuntu PCs are unable to configure with IP address from DHCP server
We are trying to setup VLAN network in our institute. We have Cyberoam firwall (Model CR300iNG) where we have configured VLAN and DHCP server.
When we connect any Ubuntu PC over VLAN network it is ...
- 131
14
votes
5
answers
13k
views
Can a computer running a DHCP server assign its own IP address?
Can a computer running a DHCP server assign its own IP address, or does it have to be set statically? If this is a question which depends on the DHCP software, then my configuration is a Debian server ...
- 2,506
0
votes
0
answers
232
views
isc dhcp server static address allocation
I have a server with several network interfaces that are combined in bridge, because all clients should be in same subnet. How should I configure isc-dhcp-server to lease static ip addres to each ...
0
votes
1
answer
1k
views
Turn old laptop into a router (dhcp and vpn)?
I need advise as to whether what I'm trying to do is possible or not.
I have a spare laptop and plan to make the most of it by setting it up as my router. Basically connect my modem directly to this ...
- 105
0
votes
0
answers
737
views
How can I use a separate DHCP server and have it go through 2 routers in Cisco Packet Tracer?
I am currently using Cisco Packet Tracer to simulate a network.
Currently I've got this setup:
PT DHCP Agent
For some reason I'm not able to get the DHCP server to return an answer to PC1 even ...
