# DHCP DHCP is a client-server protocol that provides configuration information to hosts on TCP/IP networks and allocates network addresses. This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles. ## What Is IPoE? DevFeed: [What Is IPoE?]() Original publisher: [Read original article]() Author: j2sw Published: 2026-07-24T12:15:00Z Content type: tutorial Language: en Sources: [Justin Wilson (j2sw)]() Topics: [DHCP](), [Ethernet](), [Networks](), [Protocol (disambiguation)](), [gateway]() Tags: [broadband](), [dhcp](), [dns](), [ethernet](), [ipoe](), [mtu](), [network-operations](), [pppoe](), [router](), [vlan]() ### AI overview This article explains IPoE, or IP over Ethernet, as an access model in which a customer router uses DHCP to obtain an IP address and network configuration directly, without establishing a PPPoE session or storing login credentials. It describes DHCP relay and Broadband Network Gateway processing and outlines subscriber-identification methods such as VLANs, access ports, DHCP Option 82, circuit identifiers, ONT details, and MAC authentication. ### Source excerpt 4 minutes read time.Many of us ISP veterans are familiar with Point-to-Point Protocol over Ethernet (PPPoE), also referred to as Triple P O E. PPPoE is showing its age. It showed its age 15 years ago. DHCP was the simple fix for modern networks. It had less overhead and was simple. Now along comes IPoE. ... Read more The post What Is IPoE? appeared first on Justin Wilson (j2sw). ## Microsoft cumulative update fixes 206 vulnerabilities, including critical Windows flaws DevFeed: [Microsoft cumulative update fixes 206 vulnerabilities, including critical Windows flaws]() Original publisher: [Read original article]() Author: Kaspersky\_Lab ("Лаборатория Касперского") Published: 2026-06-15T18:48:33Z Content type: news Language: ru Sources: ["Лаборатория Касперского" RU]() Topics: [Microsoft](), [Security](), [Windows](), [Windows 11](), [DHCP](), [HTTP](), [GitHub]() Tags: [bitlocker](), [cve](), [defender](), [dhcp](), [github](), [http](), [microsoft](), [microsoft-defender](), [patch-tuesday](), [security](), [tag-9fe8963de219](), [windows](), [windows-11]() ### AI overview Microsoft released a cumulative update that fixes 206 vulnerabilities, including 39 rated critical. The article covers high-severity Windows network-stack issues and patches for vulnerabilities previously disclosed by the person known as Nightmare Eclipse. ### Source excerpt На прошлой неделе компания Microsoft выпустила очередной кумулятивный набор патчей для своих продуктов. В соответствии с общей тенденцией на увеличение количества обнаруживаемых уязвимостей за единицу времени, данный релиз исправляет рекордные 206 уязвимостей, из них 39 имеют статус критических. Если делить заплатки по категориям, то 63 патча закрывают уязвимости, ведущие к повышению привилегий, 56 багов обеспечивают выполнение произвольного кода, еще 30 могут приводить к утечке информации. Наиболее опасная уязвимость имеет идентификатор CVE-2026-45657, близкий к максимальному рейтинг опасности 9,8 балла по шкале CVSS. Это ошибка в ядре Windows при обработке сетевых пакетов данных, результатом эксплуатации которой может быть удаленное выполнение произвольного кода, затрагивает она Windows 11, а также Windows Server 2022 и 2025. Такого же высокого рейтинга удостоились еще две проблемы -- CVE-2026-47291 и CVE-2026-44815, они также относятся к сетевому стеку в Windows, соответственно затрагивая драйвер HTTP.sys и встроенный клиент DHCP. Кроме того, была закрыта уязвимость, позволяющая обойти BitLocker, ранее раскрытая анонимом, известным как Nightmare Eclipse. Об этом многомесячном противостоянии стоит поговорить подробнее. Читать далее ## KPN Interactieve TV zonder Experia Box DevFeed: [KPN Interactieve TV zonder Experia Box]() Original publisher: [Read original article]() Published: 2026-06-07T10:36:42Z Content type: tutorial Language: nl Sources: [Bert Hubert's writings]() Topics: [multicast](), [DHCP](), [Linux](), [Script](), [Internet](), [proxy](), [Raspberry Pi]() Tags: [dhcp](), [internet](), [linux](), [multicast](), [pi](), [pppoe](), [proxy](), [script](), [vlan](), [vlans]() ### AI overview This tutorial explains how to use a KPN Interactieve TV Set Top Box without an Experia Box. It describes the required KPN VLANs, multicast and IGMP proxy setup, DHCP option 60, and a Linux script that can run even on a Pi Zero. The author notes that the instructions were updated in June 2026 and includes a factory-reset tip. ### Source excerpt Ik ben een heel tevreden klant van KPN Internet. Om diverse redenen gebruik ik de Experia Box niet, maar ik wil wel graag TV kunnen kijken met de KPN Interactieve TV Set Top Box ("5202"). Vroeger ging dat "vanzelf goed", tegenwoordig is daar wat werk voor nodig. UPDATE Juni 2026 (na 5 jaar!): de instructies werken weer, er is een update geweest in het igmpproxy.conf bestand. Ook heb ik een tip toegevoegd hoe de ontvanger terug te brengen naar fabrieksinstellingen, wat bij mij recent nodig was. ## Pi-hole: bloquea publicidad en toda tu red DevFeed: [Pi-hole: bloquea publicidad en toda tu red]() Original publisher: [Read original article]() Author: Antonio Pérez Published: 2026-02-04T00:00:00Z Content type: tutorial Language: es Sources: [tengoping.com]() Topics: [Pi-hole](), [DHCP](), [Raspberry Pi](), [Linux](), [Debian](), [Ubuntu]() Tags: [cloudflare](), [debian](), [dhcp](), [dns](), [lan](), [linux](), [local](), [pi](), [raspberry-pi](), [resolver](), [router](), [script](), [settings](), [ubuntu]() ### AI overview A Spanish tutorial explaining how Pi-hole filters advertising and tracking domains through local DNS, how to install it on a Raspberry Pi or Linux system, configure it on a router, use DHCP when necessary, and resolve local network names. ### Source excerpt Pi-hole a fondo: por qué el DoH del navegador lo esquiva, DNS local para tu LAN, Teleporter y qué revisar si no bloquea. ## Comparing IP and CLNP: Reaching Off-Subnet Nodes DevFeed: [Comparing IP and CLNP: Reaching Off-Subnet Nodes]() Original publisher: [Read original article]() Published: 2025-03-05T07:08:00Z Content type: tutorial Language: en Sources: [ipSpace.net blog]() Topics: [TCP/IP](), [networking](), [DHCP](), [Load Balancing]() Tags: [cisco](), [dhcp](), [ip](), [ipv4](), [ipv6](), [load-balancing](), [networking-fundamentals](), [routing]() ### AI overview This article compares how TCP/IP and CLNP identify a first-hop router for traffic to off-subnet nodes. It describes IPv4 default routes, DHCP configuration, first-hop redundancy protocols, and CLNP Intermediate System Hellos. ### Source excerpt The previous blog post in this series discussed how TCP/IP and CLNP reach adjacent nodes and build ARP/ND/ES caches. Now let's move one step further: how do nodes running IPv4/IPv6 or CLNP discover the first-hop router that could forward their traffic to off-subnet nodes they want to communicate with? Read more ... ## Why VLAN 1 Should Not Be Tagged in a Trunk DevFeed: [Why VLAN 1 Should Not Be Tagged in a Trunk]() Original publisher: [Read original article]() Published: 2025-02-11T07:05:00Z Content type: article Language: en Sources: [ipSpace.net blog]() Topics: [Network](), [Ethernet](), [DHCP](), [Cisco]() Tags: [bridging](), [cisco](), [dhcp](), [ethernet](), [lan](), [netlab](), [network](), [security]() ### AI overview The article examines conflicting interpretations of VLAN 1 in trunks by Cumulus NVUE and Arista EOS. It recommends avoiding VLAN 1 in VLAN trunks and using it as the native VLAN when necessary, while explaining the historical and operational reasons behind this behavior. ### Source excerpt It all started with a netlab issue describing different interpretations of VLAN 1 in a trunk. While Cumulus NVUE (the way the netlab configuration template configures it) assumes that the VLAN 1 in a trunk is tagged, Arista EOS assumes it's the native VLAN. At that point, I should have said, "that's crazy, we shouldn't allow that" and enforce the "VLAN 1 has to be used as a native VLAN" rule. Alas, 20/20 hindsight never helped anyone. TL&DR: Do not use VLAN 1 in VLAN trunks; if you have to, use it as a native VLAN. Read more ... ## netlab 1.9.2: STP, LAG, Cisco IOL, Edgeshark DevFeed: [netlab 1.9.2: STP, LAG, Cisco IOL, Edgeshark]() Original publisher: [Read original article]() Published: 2024-11-04T06:13:00Z Content type: release Language: en Sources: [ipSpace.net blog]() Topics: [Network](), [configuration](), [Linux](), [Cisco](), [Containers](), [DHCP]() Tags: [cisco](), [configuration](), [container](), [dhcp](), [linux](), [netlab](), [network](), [new-features](), [release]() ### AI overview The netlab 1.9.2 release fixes bugs and adds spanning tree and link aggregation configuration modules, the netlab exec command, Edgeshark support, Cisco IOS on Linux support, and numerous networking, virtualization, DHCP, and container features. ### Source excerpt While I was busy fixing bugs in the netlab release 1.9.2, other contributors added exciting new features: Jeroen van Bemmel added the spanning tree and link aggregation configuration modules, initially implemented on Arista EOS, Cumulus Linux, and FRR. Dan Partelly added the netlab exec command that can execute the same command on a set of network devices, support for Edgeshark, and support for Cisco IOS on Linux (IOL) and Cisco IOS layer-2 image on Linux (IOLL2), the latter after a heroic uphill battle with ancient software (part 1, part 2). Other new features include: Read more ... ## Networking Virtual Machines and Containers Must Work Reliably Out of the Box DevFeed: [Networking Virtual Machines and Containers Must Work Reliably Out of the Box]() Original publisher: [Read original article]() Published: 2024-05-06T06:25:00Z Content type: opinion Language: en Sources: [ipSpace.net blog]() Topics: [networking](), [virtual machines](), [DHCP](), [Vagrant](), [dell]() Tags: [cisco](), [dell](), [dhcp](), [netlab](), [network](), [networking](), [ssh](), [vagrant](), [virtual-machines](), [virtualization]() ### AI overview The article argues that free network operating system images distributed as containers or virtual machines must work reliably out of the box. It describes Junos vPTX rejecting DHCP-assigned addresses and Dell OS10 images having intermittent SSH server failures that make automation and CI/CD use impractical. ### Source excerpt Some networking vendors realized that one way to gain mindshare is to make their network operating systems available as free-to-download containers or virtual machines. That's the right way to go; I love their efforts and point out who went down that path whenever possible1 (as well as others like Cisco who try to make our lives miserable). However, those virtual machines better work out of the box, or you'll get frustrated engineers who will give up and never touch your warez again, or as someone said in a LinkedIn comment to my blog post describing how Junos vPTX consistently rejects its DHCP-assigned IP address: "If I had encountered an issue like this before seeing Ivan's post, I would have definitely concluded that I am doing it wrong."2 Read more ... ## netlab 1.8.0: Control-Plane Daemons, BIRD, dnsmasq DevFeed: [netlab 1.8.0: Control-Plane Daemons, BIRD, dnsmasq]() Original publisher: [Read original article]() Published: 2024-03-04T07:25:00Z Content type: release Language: en Sources: [ipSpace.net blog]() Topics: [networking](), [BGP](), [DHCP](), [Docker](), [Containers](), [Ubuntu](), [Cisco]() Tags: [bgp](), [cisco](), [container](), [container-image](), [dhcp](), [docker](), [dockerfiles](), [netlab](), [networking](), [ospf](), [ubuntu]() ### AI overview This release article describes netlab 1.8.0, which adds control-plane daemon support through BIRD for OSPF and BGP and dnsmasq for DHCP. It also explains building required BIRD container images with Dockerfiles and the netlab clab build command, and lists additional networking, validation, configuration, and startup features. ### Source excerpt I wanted to include open-source networking-related software into netlab topologies since (at least) the days I was writing the DHCP relaying saga. It turned out to be a bit more complex than I anticipated (more about that in another blog post), but I hope you'll find it useful. netlab release 1.8.0 includes dnsmasq running as a DHCP server and BIRD running OSPF and BGP. ExaBGP and GoBGP are already on the wish list; if you have any other ideas, please start a GitHub discussion. I had a hard time finding reasonable container images for BIRD; the BIRD team does not publish them, and everything else I found looked either abandoned or a hobby project. The solution turned out to be exceedingly simple: you cannot run the containers without Docker anyway, which means the docker build command is just a few keystrokes away. I added Dockerfiles needed to build those containers to the netlab source code and implemented the netlab clab build command as a thin wrapper around docker build. It takes just a few seconds (plus the time it takes to download the Ubuntu container image) to build the containers you need. Read more ... ## DHCP Relaying on a Linux Host DevFeed: [DHCP Relaying on a Linux Host]() Original publisher: [Read original article]() Published: 2024-02-28T07:02:00Z Content type: article Language: en Sources: [ipSpace.net blog]() Topics: [DHCP](), [Linux](), [networking](), [Software]() Tags: [dhcp](), [linux](), [netlab](), [networking](), [software]() ### AI overview The article investigates duplicate DHCP packets when ISC DHCP Relay runs on a Linux router. It finds that enabled IP forwarding causes duplicate packets, while disabling IP forwarding makes them disappear, and explains the behavior in terms of raw sockets. ### Source excerpt Markku Leiniö sent me an interesting observation after writing a series of DHCP-relaying-related blog posts: I was first using VyOS, but it uses the ISC DHCP relay, and that software relays unicast packets. The DHCP procedures eventually worked fine, but getting sensible outputs and explanations was a nightmare. I quickly reproduced the behavior, but it took me almost half a year to turn it into a blog post. Engaging in a round of yak shaving (I wanted to implement DHCP in netlab first) didn't exactly help, either. Read more ... ## Setting Up netboot.xyz for Network Booting DevFeed: [Setting Up netboot.xyz for Network Booting]() Original publisher: [Read original article]() Author: Techno Tim Published: 2023-11-11T13:00:00Z Content type: tutorial Language: en Sources: [Techno Tim]() Topics: [Network](), [boot](), [DHCP](), [Operating system](), [Docker](), [Windows](), [Ubuntu](), [virtualization]() Tags: [boot](), [dhcp](), [docker](), [github](), [network](), [operating-systems](), [self-hosted](), [ubuntu](), [virtualization](), [windows]() ### AI overview A tutorial on setting up netboot.xyz as a network boot service using Docker, configuring DHCP, and booting operating-system environments over a local network. It also discusses local mirrors, UniFi DHCP settings, PXE boot configuration, and limitations such as unsupported environments. ### Source excerpt Imagine all of your favorite operating systems in one place, available anywhere on your network, and you'll never need to use your flash drive again. That's the promise of netboot.xyz, a network boot service that lets you install or boot to any operating system simply by booting to the network. 📺 Watch Video Disclosures: Nothing in this video was sponsored Don't forget to ⭐ netboot.x... ## Orange FTTH on a custom router DevFeed: [Orange FTTH on a custom router]() Original publisher: [Read original article]() Author: Marek Published: 2020-08-01T22:00:00Z Content type: tutorial Language: en Sources: [Marek Majkowski]() Topics: [Network Configuration](), [Debian](), [Network](), [Firewall](), [DHCP](), [huawei]() Tags: [debian](), [dhcp](), [firewall](), [ftth](), [huawei](), [interfaces](), [internet](), [iptables](), [ipv4](), [ipv6](), [mikrotik](), [network](), [pppoe](), [router](), [server](), [vlan]() ### AI overview A tutorial describing how to replace Orange's FunBox 3.0 with a custom Debian router for Orange FTTH in Poland. It covers obtaining an ONT and PPPoE credentials, configuring VLAN 35 and PPP, setting up iptables, and providing DHCP for the local network. ### Source excerpt Orange FTTH on a custom router Here in Poland, Orange has a decent FTTH offer - less than $16 for 300Mbit down, 50Mbit up. People reversed it over the years, most impressively Pierre Kim in 2016: Recently, it has been possible to replace the router the provider gives, called "FunBox 3.0", with a custom one. There are couple of reasons for that: - My understanding it's impossible to get a stable IPv6 on FunBox 3. - FunBox is proprietary and evil. ## ReactOS Newsletter: Wireless Networking and USB Driver Progress DevFeed: [ReactOS Newsletter: Wireless Networking and USB Driver Progress]() Original publisher: [Read original article]() Published: 2012-01-24T00:00:00Z Content type: article Language: en Sources: [Front Page on ReactOS Website]() Topics: [ReactOS](), [Networks](), [Network](), [Operating system](), [DHCP](), [TCP/IP](), [USB](), [systems]() Tags: [dhcp](), [free](), [kernel](), [network](), [open-source](), [os](), [react](), [reactos](), [tcp-ip](), [usb](), [win32](), [winapi]() ### AI overview ReactOS development updates include support for joining open and WEP-encrypted wireless networks, along with ongoing work on USB host-controller and device drivers. WPA and WPA2 support was not yet implemented, and several USB features remained incomplete. ### Source excerpt Wireless Cameron Gutman has spent the last month or so adding the pieces needed to support wireless network cards to ReactOS. A good portion of the work entailed writing the NDIS protocol driver (ndisuio) that handles sending wireless NDIS object identifier (OID) messages. These messages handle querying network drivers about their status and capabilities and also set the receiving mode the device should operate in. In addition to the kernel side, a user mode utility is needed to let end users actually make these requests. ## Dynamiczne IP i RBL'e DevFeed: [Dynamiczne IP i RBL'e]() Original publisher: [Read original article]() Author: Tom Published: 2011-08-27T00:00:00Z Content type: tutorial Language: pl Sources: [Tomasz Gągor]() Topics: [DHCP](), [Development]() Tags: [dev](), [dhcp](), [linux](), [mail]() ### AI overview A guide to monitoring a mail server's dynamic IP against real-time blocklists (RBLs). It uses the rblcheck tool and a scheduled shell script to identify blacklist listings within an hour while avoiding unnecessary notifications when the IP is clean. ### Source excerpt Mój serwer pocztowy działa od jakiegoś czasu na dynamicznym IP (dobre bo tanie...) i przeważnie nie ma z tym problemów. Postarałem się jak mogłem ustawiając SPF'a i DomainKeys aby uwiarygodnić go u większych dostawców poczty. Niestety wszystko to diabli biorą w momencie gdy wygasa mi leasse DHCP i dostaję nowe IP po jakimś spamerze/zombiaku. Wisi takie w 2-3 większych RBL'ach i o dostarczaniu poczty można zapomnieć. Miło gdy jeszcze zdalny MTA zechce odesłać zwrotkę "zróbta coś bo wisisz w RBL'u takim a takim...", ale zdecydowania niefajnie gdy wysyłasz pocztę a ona od razu leci do /dev/null 😦 ## ReactOS Newsletter 75: Bitmap Drawing and LiveCD Networking Updates DevFeed: [ReactOS Newsletter 75: Bitmap Drawing and LiveCD Networking Updates]() Original publisher: [Read original article]() Published: 2010-08-07T00:00:00Z Content type: news Language: en Sources: [Front Page on ReactOS Website]() Topics: [ReactOS](), [Network](), [networking](), [GUI](), [TCP/IP](), [DHCP](), [win32]() Tags: [compression](), [data-structures](), [dhcp](), [free](), [graphics](), [network](), [networking](), [open-source](), [os](), [react](), [reactos](), [tcp-ip](), [win32](), [winapi]() ### AI overview ReactOS Newsletter 75 reports development progress on bitmap drawing and LiveCD networking. It describes work to improve device-independent and device-dependent bitmap conversion, address legacy data-structure support, and fix bugs affecting TCP/IP, NDIS, and DHCP device detection so the LiveCD can get online. ### Source excerpt Starcraft 2 came out. Enough said. Bitmap Drawing Bitmaps are more or less the primary medium through which the Win32 subsystem draws things. However, the term refers to more than just the widely used format for images and the like. That format is generally considered a device independent bitmap (DIB). With a device independent version there of course exists a device dependent one, which is the format that a particular graphics device supports for drawing. ## wpa\_supplicant: GUI and wpa\_action DevFeed: [wpa\_supplicant: GUI and wpa\_action]() Original publisher: [Read original article]() Author: Nelson Elhage Published: 2008-09-18T12:07:49Z Content type: article Language: en Sources: [Nelson Elhage]() Topics: [GUI](), [configuration](), [Networks](), [networking](), [DHCP](), [Debian](), [interfaces](), [Ubuntu]() Tags: [configuration](), [debian](), [dhcp](), [gui](), [networking](), [networks](), [ubuntu](), [ui](), [wifi]() ### AI overview This article describes using wpa_gui to scan for and add wireless networks to wpa_supplicant's configuration without root privileges. It also explains a wpa_action-based setup that brings virtual interfaces up or down to trigger DHCP or static network configuration when associations change, while noting that the author's roaming experience was unreliable. ### Source excerpt I've made two new interesting discoveries about wpa_supplicant since writing my last blog post on the subject. (Actually, I pretty much made both of them while reading documentation in order to write it, and have been lame about writing them up). Using wpa_gui It turns out that wpa_gui not only allows you to select existing networks, but also to scan for and add new networks to your configuration file. In addition, you can run it as yourself, without needing to sudo it. ## Using wpa\_supplicant on Debian/Ubuntu DevFeed: [Using wpa\_supplicant on Debian/Ubuntu]() Original publisher: [Read original article]() Author: Nelson Elhage Published: 2008-08-22T14:06:00Z Content type: tutorial Language: en Sources: [Nelson Elhage]() Topics: [Debian](), [Ubuntu](), [networking](), [Linux](), [Encryption](), [configuration](), [DHCP](), [Command-line interface]() Tags: [command-line](), [configuration](), [debian](), [dhcp](), [encryption](), [linux](), [networks](), [password](), [ubuntu](), [wifi](), [wireless]() ### AI overview This tutorial documents using wpa_supplicant to manage wireless connections on Debian and Ubuntu. It explains the author's configuration approach for connecting to multiple networks, including open, WEP, and WPA networks, while using DHCP for network addressing. ### Source excerpt I've been using wpa_supplicant to manage wifi on my Ubuntu laptop for a while, and have found that it's pretty close to what I want for managing wireless -- closer than anything else I've found, at least. I figured I should document my setup and experiences. Some Background You probably all know just how much wireless on Linux can be a pain to get working right. Getting drivers and so forth working is usually fine these days, especially if you're using Ubuntu, but managing connecting to multiple networks and dealing with WPA and WEP is a serious pain in the ass.