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DHCP is an auto configuration protocol used on IP networks.

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I'm setting up a Raspberry Pi as a mini router for university Accommodation, using NetworkManager to configure the connections, but I'm running into a problem. My current setup has a USB ethernet ...
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I am trying to remove an old IP and route from Fedora 36 NetworkManager. I recall my steps as I followed them. I am using Win-11 x86_64(host), VirtualBox 6.1.5, Fedora 36 (guest.) When I installed the ...
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I have two hosts, MintPC and AlpineVM. The VM is on a bridged network so it appears as its own device on the network with its own address. Both obtain addresses through DHCP provided by my router/...
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I run dnsmasq on a server (specifically OpenWrt) to act as both DHCP and DNS. OpenWrt DHCP configuration /etc/config/dhcp: option readethers '1' list address '/my-phone.lan/172.28.79.133' Which is ...
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I have one computer, Server, with two Ethernet ports, enp2s0 and enp3s0. What I want to do is that I want this computer to connect to the internet via company network (10.11.1.0/24) and also be a DHCP ...
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I’m setting up a PXE boot environment using a DHCP server and a Realtek RTL8168 NIC (bulit-in ethernet on my mainboard). I’ve configured DHCP Option 67 to send the boot file name (netboot.xyz.efi), ...
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I'm running Linux 21.3 on a HP Pavilion. If lose wifi connection due to poor signal to my NowTV Model NR801 router, I'm unable to reconnect to any network (including wired) without rebooting my ...
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So I have an embedded system I've built with yocto. I'm trying to enable DHCPv6. But when I try to bring the interface online, ifup says it can't find DHCPv6 software, even though dhcpcd is ...
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I am running Pop!_OS 22.04 LTS on my laptop, which is based on Ubuntu 22.04 LTS. Linux is set up with root partition encryption, with auto-decryption set up during boot since I am only using the ...
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I checked the whole conf file but did not find the option equivalent to "deny unknown-clients" of Debian isc-dhcp-server. Possible?
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Related to this question How do you get systemd-networkd to honor the [DHCPv4] setting FallbackLeaseLifetimeSec=forever? (Or more probably, what am I doing wrong that is preventing this?) When it ...
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Linux version : Ubuntu 22.04 server minimal This box has 3 NIC cards and all those three NIC cards will be configured with static addresses by configuring in file /etc/netplan/00-installer-config.yaml ...
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My ISP provides a pre-configured Asus router running Linaro GCC 4.6-2012.02 which connects to ONT (fibre box) via Ethernet cable. I can SSH into the router and see the WAN interface: 18: vlan10@eth0: &...
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I have a block of public IP addresses and I want to build a router using my Raspberry Pi to offer those public IP addresses to my devices behind CGNAT. The topology [Server](wireguard addr = 10.0.0.1/...
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I don't know why my pikvm gets 2 ip addresses for the wlan0. It's the only device that gets 2 in my entire network. 3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP ...
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I have a Ubuntu 20.04.6 LTS using dhcp. Everytime I reboot the ip-address gets changed but not DNS. I'd like to keep the same ip-address. I have changed my /etc/netplan/01-netcfg.yaml as : network: ...
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Back when only ifconfig and route -n and cat /etc/resolv.conf were the only ways to check IP address / Mask / Gateway on a system -- was there a way to determine if these attributes were assigned via ...
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I have set up dnsmasq on my local network that consists of Linux/macOS computers. I have added a line like this in my /etc/dnsmasq.d/home.lan file: dhcp-host=dc:cd:2f:bf:44:12,printer,192.168.0.3 I ...
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I am using systemd networkd version 253.1. I have 2 ethernet ports on my Linux 5.15 box and I want to setup a DHCP server on the second port. I had successfully done that with the following ...
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I am working on an embedded system and it uses udhcpc6 as its DHCPv6 client. If I set an interface to 'dhcp' in the /etc/network/interfaces file, udhcp and udhcp6 automatically start. I then connect ...
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I'm running Gentoo. I have a HP laptop with the touch screen. I put the default GNOME on it. Problem was that Wayland didn't like touch screens. So I did the update and put X on it. Everything worked ...
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Running ISC DHCP Server 4.4. (I know, I know, it's EOL...there was a very good reason I uninstalled Kea-DHCP-Server and decided to go with it's predecessor ISC-DHCP-Server...though I can't recall what ...
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I'm running Ubuntu 22.04.4 on a Raspberry Pi. I installed NetworkManager and added a config file somewhat like this: # /etc/netplan/10-my-config.yaml network: version: 2 renderer: NetworkManager ...
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The issue Changing the DNS option in resolv.conf from the VM's gateway to 8.8.8.8 will result in no DNS resolution. resolvectl query google.com succeeds if I set DNS to my gateway. The set-up /etc/...
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I'm working on setting up DNS and DHCP on my homelab network using BIND9 and Kea, and I'm having trouble getting my zone files to update consistently. My setup is BIND 9.18.26 and Kea 2.4.1 on the ...
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Although I've disabled IPv6 using /etc/sysctl.conf net.ipv6.conf.all.disable_ipv6 = 1 net.ipv6.conf.default.disable_ipv6 = 1 net.ipv6.conf.lo.disable_ipv6 = 1 IPv6 addresses still show up on the ...
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I would like know if anyone else has had this problem. I have my own device as a server with Ubuntu Server operating system in the server room. After some time the server always stops responding to ...
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I've a Raspberry Pi running Debian 12 (bookworm) and have set up an access point with the following command: sudo nmcli con add type wifi ifname wlan0 mode ap con-name MY_AP ssid MySSID \ ...
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When I run nmap 192.168.1.*, I get a print out of all devices on my network. The hostnames are not what I expect. For example, the hostname of the Linux desktop (192.168.1.203) I am currently on is ...
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I have Linux system running DHCP server which assigns less than 5 leases to a similar clients, always. The connecting client can have different MAC OUI(first 3 bytes) and client uses the MAC address ...
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I am running dnsmasq 2.90 inside a Debian 11.0 based docker container as part of Pi-hole 5.18.2. I would like to configure dnsmasq to serve the addresses of my local hostsnames for multiple local ...
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I am looking for a linux dhcp-server that is easy to configure and is just running when I start it on commandline - or even better keepts in foreground and quits if I Ctrl+C it. What I am not try to ...
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Using debian, and installed isc-dhcp-server via the following command sudo apt -y install isc-dhcp-server After agreeing to any dependencies, the follow error message was thrown Job for isc-dhcp-...
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As a title, I found my wi-fi port without an IP address assigned, as follows. ifconfig wlan0 wlan0: flags=4099<UP,BROADCAST,MULTICAST> mtu 1500 ether b8:13:32:81:2c:d2 txqueuelen 1000 ...
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I will try to explain this right, not a linux guru! About a week ago suddenly started getting a 401 when sending requests, seems that on our kubernetes cluster when it hits the one node that has a ...
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I have two computers connected directly via ethernet with one serving as a dhcp server and the other as a client my config: interface eth0 lease_file /var/lib/udhcpd/udhcpd.leases remaining no ...
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Debian 12.4 with networking managed by systemd networking.service, dual stack IPv4 and IPv6. I am aware of the many questions asking how to stop the system from updating resolv.conf, and this is not a ...
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I am administrating a LAN with a mix of Linux servers and Windows/OSX/Linux/other systems. A while ago I configured our DHCP- (isc-dhcpd-4.4.1) and DNS server (BIND 9.16.44-Debian) to implement DDNS, ...
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I have a PC and RPI, both running debian. My PC has internet access via ethernet(not wifi), and I connect to my RPI with ssh via another ethernet from the PC to the RPI. The PC to RPI connection uses ...
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I have a MikroTik (10.0.0.138) router, where the static DNS server 8.8.8.8 is set and DHCP is enabled. The configuration of the MikroTik is: To my understanding, when the MikroTik answers a DHCP ...
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I am very new to kea-dhcp. I am trying to use kea-dhcp 2.0.1 version. below is my interface configuration mentioned in "dhcp.conf" "Dhcp4": { "interfaces-config": { ...
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My server gets IP address from dhcp. Sometimes the dhcp server does not respond, and my server times out (no dhcp offer, sleeping) I thought, my server would re-try dhcp, but that does not happen. ...
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I’ve built a custom Buildroot with NetworkManager as the only networking daemon and booting my board via PXE. The problem is that /etc/resolv.conf is missing actual DNS IPs and domain. While kernel is ...
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I have a Linux machine running kernel version 5.15. I have systemd version 250.5+ installed and I have it configured to run a DHCP server on a physical ethernet port. I have a raspberry pi running the ...
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I have VM which is working with "Host-Only Adapter". I disabled VirtualBox's built-in DHCP-server. I've installed isc-dhcp-server on my hypervisor. Then I added the subnet subnet 10.10.54.0 ...
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my first question here. I'm currently using the 'dhcp-helper' program to do dhcp relay, works fine, but I want to switch to using the systemd-networkd 'RelayTarget' function in the *.network file. I'...
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I have been dual-booting Linux for about three weeks now, and this issue is keeping me from fully switching because I have to reboot my computer approximately every hour. On Linux, I experience random ...
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OS is Debian 10-12. I know in some (most?) cases, a DHCP server will provide DNS servers at the same time as it leases an ip address. I would like to use dhclient to get a list of DNS servers provided ...
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I am customizing the system using version 6.4.0 of the kernel, and the file system is created using busybox. However, I don't know why enp3s0 cannot obtain an ip. It seems that using udhcpc can obtain ...
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How can I configure Linux to reject a specific IP from DHCP server? I mean I do not want my lan interface to get assigned 192.168.0.12 under any circumstances. Is it possible? I have found on /etc/...
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