Questions tagged [dhcp]
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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Controlling NetworkManager DHCP internal behavior
I have a GSM modem connected to a USB port, and when it's connected, it receives an IP address from NetworkManager's DHCP server, specifically, it gets assigned 192.168.0.100. However, there's a ...
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Why Dlink DIR-615 T3 is not working as repeater with ZTE F670LV9.0 Main Router?
I am currently using a ZTE F670LV9.0 router as my main router with a default gateway of 192.168.1.1 and a DHCP server pool ranging from 192.168.1.2 to 192.168.1.250. My goal is to utilize my old D-...
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how do I force Linux to connect to a specific DHCP server when there are 2 on the network?
I have 2 DHCP servers available on my network, one is an active VPN gateway, which I'm trying to connect my Linux client. By default, the client receives an IP address from the non-VPN server. How do ...
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dnsmasq DHCP server on Mac OS - not working
I'm trying to set up a DHCP server using dnsmasq on Mac OS (Ventura) so that it can serve IP addresses to virtual machines that I am running.
I have included this line into my /opt/homebrew/etc/...
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How to configure a gateway's DHCP and DNS to resolve hosts with the same hostname but different vlan domains?
A local network 192.168.1.0/24 has vlans 'datacenter' 10.10.10.0/24 and 'staging' 10.10.20.0/24. Hosts are created in each of these vlans with identical hostnames, such as 'example.datacenter' and '...
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Xfinity hotspot not connecting to certain websites via extender
I am a Xfinity customer and receive xfinity hotspot at my location. The signal is weak so I got an extender. I was able to connect the extender to the xfinity hotspot, however it connects to some ...
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Router Zyxel EX3301-T0 static IP address for wired device
I did assign a static IP address 192.168.1.3 for a device, with a known MAC address,
which was connected by wire to the router.
That was done via "Home networking" → "Static DHCP".
...
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ASUS RT-AXE7800 router; unable to show ALL connected devices - why?
My network is straight forward. I have an ASUS RT-AXE7800 router which provides DHCP to which is attached my ISP provided router / modem in BRIDGE mode. It's a FTTH connection.
I have multiple power ...
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Is there a way to setup manual TCP/IP configuration on MacOS only for specific networks?
I need to have a static IP address only when I connect to the network generated by a custom device that I have. Is there a way to do this operation automatically without having to type IP, gateway and ...
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Receiving addresses via DHCP does not work
I have created in Hyper-V, 3 systems:
Windows 10 Enterprise
Windows 10 Enterprise
Windows Server 2022
All of them are connected to a Hyper-V virtual Switch (Private)
In Windows Server.
I created the ...
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VirtualBox DHCP Server on Nat Network
Could DHCP server set up on Custom Nat Network in VirtualBox? I don't want to use VirtualBox default DHCP server. I want to fully control this service.
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VirtualBox Set Hostname and Domain name via DHCP Server
I try to create NAT Network which all VM machines are assigned hostname and IP addresses by DHCP. According to my quick research, I can assign IP address with following command and I see option about ...
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DHCP server assigining wrong IP address
I have a strange problem with a few laptops. I noticed that all of a sudden one laptop stopped getting ethernet connection. It managed to get an IP with all the rest of the info (subnet, DNS servers, ...
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PXE Boot ESXi 8 on Intel NUC 12
Hi I'm trying to setup a small home lab using VMWare. I'm trying to PXE boot ESXi-8 using kea for dhcp and tftp. I see my target host receiving a IP from kea but it does not seem to be picking up the ...
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TrueNAS Plex plugin DNS Error
I'm fairly new to TrueNAS and have just setup a server with it installed. I want to install plex using the plugin. when I install plex with DHCP and NAT unchecked I use the ipv4 interface as vnet0 and ...
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Reconnect ethernet link over (Magic) Packet
is there a possibility to send a computer, network adapter or any other device a specific packet over the mac or something similar that reconnects the ethernet connection, for example it forces the ...
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Custom subnet mask while using DHCP
I'm trying to connect to an RPI on the same physical network over SSH. Normally, I'd do this with a simple ip a, ssh xxx@ip, but because of the network it doesn't work. There are several problems:
...
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How to connect to a public WiFi with failing DHCP server
We've all experienced when you can't connect to a WiFi in a coffee shop or shopping mall - the connection is just not working. Many times, I was able to connect to the network by:
Checking the ...
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Can't ping router
When I first installed Fedora-38, I could reach the Internet, so the current lack of connectivity can't be drivers or cables. The NetworkManager was constantly attempting to connect wlp5s0, failing ...
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Cannot get a IP address from DDWRT wireless access point connected to Opnsense
I have been setting up my home lab with Opnsense on a HP T620, TP Link managed switch and my old TP Link Archer running DDWRT as a WAP.
I can connect to the WIFI but all the IP addresses are assigned ...
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Distinct DNS for two VLANs using Dnsmasq and FreshTomato
I have two VLANs on my router and am trying to serve distinct DNS to each of them. I found this thread that shows a user trying to accomplish something similar.
I've done research before finding that ...
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How to prevent Windows 10 from reverting skipped DHCPv6 IPv6 address? Or how to disable DHCPv6?
My school allocated a /64 prefix IPv6 block to all my schoolmates, I want to fix the 64 bit suffix of my Windows 10 22H2 PC, so I executed the following PowerShell script to set my custom IPv6 address ...
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Failed to start dhcp
I'm working on an assignment where I need to configure a LINUX-based DHCP server.
However, I had a problem where I couldn't start my DHCP.
This is the error code:
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Have dnsmasq resolve names from dhcpd
On an Arch Linux server, I am running dhcpd with a configuration that gives both dynamic and static leases. This works fine, but using IP addresses is not too nice, especially when addressing dynamic ...
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Hyper-V Default Switch DHCP long lease time
I need to create VMs (on Windows 10 and 11) that can talk to each other, and to the public internet. The machines on which I need to do this may have Docker Desktop for Windows and WSL2 installed. ...
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Windows 11 loses IPv4 address one hour after boot
Problem Description
The problem I am observing is that I will lose connectivity with all non-local IPv4 hosts one hour after Windows 11 boots up. This would normally manifest as getting disconnected ...
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Can you configure dnsmasq/dhcpd to lease two IP ranges to Podman containers and libvirt VMs?
For the past several days now, I've been trying to research and figure out how to setup two different IP ranges in the same network that only function as quick identifiers. Hardware-wise, I have the ...
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Routers can not obtain DHCP lease from modem, but PC can
I have two different routers from different brands, neither of which can obtain a DHCP lease from the modem. But if I connect a PC directly to the modem, it obtains one connects immediately. This only ...
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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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Macvtap connectivity lost after a few hours?
I setup a macvtap interface like this:
ip link add link eth0 vlan type macvlan mode bridge
ip address add 10.0.0.17 dev vlan
ip link set dev vlan up
ip route flush dev eth0
ip route flush dev vlan
ip ...
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Connecting multiple LAN's together
I have a fairly robust homelab, and I'm trying to "mesh" an independent LAN into my current setup. Long story short, I have my home network that runs great, and a camper trailer that has its ...
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Can my router provide IP addresses with an internet received via wifi?
I'm using a borrowed wifi signal from my neighbour, all the devices in my apartment receive IP addresses from his router. Once I was having some connecting problems and I decided to try using what ...
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unable to ping other machine via two routers, 1 network
I managed to setup 2 routers with different isp providers to be joined in 1 local network. Router1 is dhcp enabled and Router2 is disabled dhcp, set static ip from Router1's ip range.
I connected 2 ...
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Windows 10 Pro computer can no longer connect to or recognize domain network
Background
I have a domain-joined Windows 10 Pro machine that has been working fine on an internal Windows Server 2012 R2 domain (for this question, let's call it MYDOMAIN.COM) for years without any ...
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Set Windows Firwall to block all outbound but allow DHCP and web use
I am trying to set Windows firewall to block default public profile, but am having difficulty when outbound activity is set to block by default, despite including allow rules for DHCP and DNS.
Failure ...
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How can I debug a DHCP failure?
I have a new VM installation of Ubuntu 22.04.2 running on VMware Player 17 on Windows 11. All works okay with a static IP, but I can't get DHCP to work as northing seems to received back.
mat@devbox:~$...
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What is the relationship between iproute2 and DHCP?
If I use DHCP on my router it allows me not to care about static routes? Do I need to use iproute2 toolset only when setting static routes without DHCP configured?
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Initial configuration of a router without connecting to it as a client, even temporarily?
Are there any home-use WiFi routers on the market capable of being initially configured WITHOUT going through The Twilight Zone, i.e. temporarily disconnecting my PC from my regular LAN and connecting ...
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Is it normal to see "excessive" ARP requests from cable modem?
I'm troubleshooting my home network because we are having frequent outages and slow connections. Very often the ASUS Wifi router shows that it has no WAN IP address. To view what might be going on I ...
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On wired network, linux, set a static IP address if DHCP if fails
At my university office my laptop needs to use a static IP address on a wired network. At home I connect to the router also by cable (saving wireless bandwidth for the rest of the family). This works ...
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Access a network machine with ip address but not with the name?
In the File Explorer in can access the machine with ip address \10.xxx.xx.xx but cant access it at \hostname. I have two machines that have this issue.
Both the machines are on LAN. They have static ...
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How can I debug my network: Setting up multiple access points
Path to the problem
In the new apartment where I live in, a single router (vodafone) takes the internet signal and shares it over hubs to four other routers (3 tp link, 1 fritzbox) and one access ...
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PXE Boot targeting gateway and ignoring Option 66
Some time ago I configured network boot for my Raspberry Pi's, so that they boot off of my main server. Since the Pi's do things a little bit differently, I though it could be fun to get PXE Boot ...
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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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Best effort secondary DHCP server with overlapping pools
I'm not experienced with DHCP configuration, and I'm looking for the best effort solution to the following non-ideal situation:
Devices I'm working with
An iPhone (sometimes a DHCP server)
Wifi ...
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How to disable the DHCP client in Windows 10 Enterprise completely?
I have a PC with Windows 10 Enterprise x64. The PC has 2 physical network interfaces; let's name them NIC1 and NIC2.
I have disabled NIC2, using the Windows UI, and I have removed the network cable ...
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ISC DHCP Server working but Bind9 is not working
So I have been trying to set up my own DCHP and DNS servers on my old 2012 Mac Mini running Ubuntu Server 22.04. The Bind9 is running on a docker container with this compose file:
version: "3&...
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DHCP reservation in VMware Workstation assigns adress from the pool
I want to make a DCHP-reservation in VMware Workstation 16.2.5.
So I edit the file C:\ProgramData\VMware\vmnetdhcp.conf:
# Virtual ethernet segment 8
# Added at 01/13/23 11:45:50
subnet 192.168.12.0 ...
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Proxy DHCP via dnsmasq: Grub welcomes me, but then gets stuck
I am attempting to EFI PXE boot GRUB2 using a Proxy DHCP server... It worked just fine with this configuration, which simply replaced the DHCP server:
interface=enp3s0
dhcp-range=192.168.1.10,192.168....
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Printer gets IP from dhcpd but can't be pinged?
My dhcpd server sees the printer on the LAN. It receives a DISCOVER, and will assign it an IP:
dhcpd[1378]: DHCPOFFER on 10.1.0.11 to 00:26:73:75:a8:79 via br0
dhcpd[1378]: DHCPREQUEST for 10.1.0.11 (...
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