# mac-address

Published articles for mac-address.

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## The EVPN trust challenge: How to detect and contain internal MAC hijacks

DevFeed: [The EVPN trust challenge: How to detect and contain internal MAC hijacks](<https://devfeed.tech/articles/the-evpn-trust-challenge-how-to-detect-and-contain-internal-mac-hijacks-103528.md>)

Original publisher: [Read original article](<https://blog.apnic.net/2026/10/28/the-evpn-trust-challenge-how-to-detect-and-contain-internal-mac-hijacks/>)

Author: Sabina Anja

Published: 2026-10-27T22:32:41Z

Content type: article

Language: en

Sources: [APNIC Blog](<https://devfeed.tech/sources/apnic-blog.md>)

Topics: [evpn](<https://devfeed.tech/topics/evpn.md>), [Routing Security](<https://devfeed.tech/topics/routing-security.md>), [Ethernet](<https://devfeed.tech/topics/ethernet.md>), [rate-limiting](<https://devfeed.tech/topics/rate-limiting.md>), [observability](<https://devfeed.tech/topics/observability.md>), [Monitoring](<https://devfeed.tech/topics/monitoring.md>), [trust](<https://devfeed.tech/topics/trust.md>)

Tags: [arp](<https://devfeed.tech/tags/arp.md>), [attack](<https://devfeed.tech/tags/attack.md>), [bgp](<https://devfeed.tech/tags/bgp.md>), [denial-of-service](<https://devfeed.tech/tags/denial-of-service.md>), [detection](<https://devfeed.tech/tags/detection.md>), [dhcp](<https://devfeed.tech/tags/dhcp.md>), [ethernet](<https://devfeed.tech/tags/ethernet.md>), [evpn](<https://devfeed.tech/tags/evpn.md>), [fabric](<https://devfeed.tech/tags/fabric.md>), [guest-post](<https://devfeed.tech/tags/guest-post.md>), [mac](<https://devfeed.tech/tags/mac.md>), [mac-address](<https://devfeed.tech/tags/mac-address.md>), [mobility](<https://devfeed.tech/tags/mobility.md>), [monitoring](<https://devfeed.tech/tags/monitoring.md>), [network-operators](<https://devfeed.tech/tags/network-operators.md>), [route](<https://devfeed.tech/tags/route.md>), [security](<https://devfeed.tech/tags/security.md>), [spoofing](<https://devfeed.tech/tags/spoofing.md>), [tech-matters](<https://devfeed.tech/tags/tech-matters.md>), [traffic](<https://devfeed.tech/tags/traffic.md>), [trust](<https://devfeed.tech/tags/trust.md>), [visibility](<https://devfeed.tech/tags/visibility.md>), [vpn](<https://devfeed.tech/tags/vpn.md>)

### AI overview

EVPN MAC mobility can turn a forged source MAC into a fabric-wide forwarding change: a leaf advertises the learned address with a higher sequence number, and other PEs prefer that route until the legitimate host advertises again. The article describes interception, denial of service, control-plane churn and possible IP hijacking, and notes that duplicate-MAC safeguards vary by platform: Juniper suppresses until manually cleared, while Nokia SR OS flushes and retries after 90 minutes. Detection recommendations include exporting route-reflector updates via BMP, tracking MAC moves over longer periods, and investigating sequence jumps, unexpected sticky flags, tie-break flapping and routes that conflict with access-layer records. It emphasizes validating host identity at the edge with controls such as MAC limits, DHCP snooping, ARP/ND inspection, IEEE 802.1X and sticky entries for critical systems.

### Source excerpt

Guest Post: EVPN MAC mobility enables seamless workload movement, but it can also amplify the impact of MAC spoofing. A forged MAC address can redirect traffic across the fabric through BGP, making access-layer controls, route-reflector visibility, and MAC-move monitoring critical defences.

## SpacemiT RISC-V SoCs To See More Improvements With Linux 7.4

DevFeed: [SpacemiT RISC-V SoCs To See More Improvements With Linux 7.4](<https://devfeed.tech/articles/spacemit-risc-v-socs-to-see-more-improvements-with-linux-7-4-77337.md>)

Original publisher: [Read original article](<https://www.phoronix.com/news/SpacemiT-Linux-7.4>)

Author: Michael Larabel

Published: 2026-10-08T10:13:54Z

Content type: news

Language: en

Sources: [Phoronix](<https://devfeed.tech/sources/phoronix.md>)

Topics: [Linux](<https://devfeed.tech/topics/linux.md>), [RISC-V](<https://devfeed.tech/topics/riscv.md>), [Linux Kernel](<https://devfeed.tech/topics/linux-kernel.md>), [ESP32-C3](<https://devfeed.tech/topics/esp32-c3.md>)

Tags: [data](<https://devfeed.tech/tags/data.md>), [desktop-linux](<https://devfeed.tech/tags/desktop-linux.md>), [device-tree](<https://devfeed.tech/tags/device-tree.md>), [fan-control](<https://devfeed.tech/tags/fan-control.md>), [hardware](<https://devfeed.tech/tags/hardware.md>), [kernel](<https://devfeed.tech/tags/kernel.md>), [linux](<https://devfeed.tech/tags/linux.md>), [linux-benchmarking](<https://devfeed.tech/tags/linux-benchmarking.md>), [linux-hardware-benchmarks](<https://devfeed.tech/tags/linux-hardware-benchmarks.md>), [linux-hardware-reviews](<https://devfeed.tech/tags/linux-hardware-reviews.md>), [linux-how-to](<https://devfeed.tech/tags/linux-how-to.md>), [linux-performance](<https://devfeed.tech/tags/linux-performance.md>), [linux-server-benchmarks](<https://devfeed.tech/tags/linux-server-benchmarks.md>), [mac-address](<https://devfeed.tech/tags/mac-address.md>), [open-source-graphics](<https://devfeed.tech/tags/open-source-graphics.md>), [phoronix](<https://devfeed.tech/tags/phoronix.md>), [phoronix-test-suite](<https://devfeed.tech/tags/phoronix-test-suite.md>), [risc-v](<https://devfeed.tech/tags/risc-v.md>), [scaling](<https://devfeed.tech/tags/scaling.md>), [sensor](<https://devfeed.tech/tags/sensor.md>), [ubuntu-benchmarks](<https://devfeed.tech/tags/ubuntu-benchmarks.md>), [ubuntu-hardware](<https://devfeed.tech/tags/ubuntu-hardware.md>)

### AI overview

Linux 7.4 adds Device Tree updates for SpacemiT RISC-V systems, including CPU scaling support on more boards, RFKILL enablement, thermal and fan control for a system-on-module, and EEPROM support for the K1 SoC. The updates also enable setting the MAC address from EEPROM data.

### Source excerpt

For those interested in the SpacemiT K3 as one of the few RVA23 RISC-V SoCs readily available so far and in the likes of the K3 Pico-ITX system, more improvements for its upstream kernel support are coming in Linux 7.4...

## Make a dedicated Wake-on-LAN server with Tailscale

DevFeed: [Make a dedicated Wake-on-LAN server with Tailscale](<https://devfeed.tech/articles/make-a-dedicated-wake-on-lan-server-with-tailscale-58015.md>)

Original publisher: [Read original article](<https://hackernoon.com/make-a-dedicated-wake-on-lan-server-with-tailscale?source=rss>)

Author: ameliepangolin

Published: 2026-09-22T08:00:19Z

Content type: tutorial

Language: en

Sources: [HackerNoon](<https://devfeed.tech/sources/hackernoon.md>)

Topics: [tailscale](<https://devfeed.tech/topics/tailscale.md>), [Network](<https://devfeed.tech/topics/network.md>), [Docker](<https://devfeed.tech/topics/docker.md>), [Raspberry Pi](<https://devfeed.tech/topics/raspberry-pi.md>), [container](<https://devfeed.tech/topics/container.md>), [Command-line interface](<https://devfeed.tech/topics/cli.md>), [Server](<https://devfeed.tech/topics/server.md>)

Tags: [command-line](<https://devfeed.tech/tags/command-line.md>), [docker](<https://devfeed.tech/tags/docker.md>), [ethernet](<https://devfeed.tech/tags/ethernet.md>), [good-company](<https://devfeed.tech/tags/good-company.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [lan](<https://devfeed.tech/tags/lan.md>), [local](<https://devfeed.tech/tags/local.md>), [mac-address](<https://devfeed.tech/tags/mac-address.md>), [network](<https://devfeed.tech/tags/network.md>), [osi-model](<https://devfeed.tech/tags/osi-model.md>), [raspberry-pi](<https://devfeed.tech/tags/raspberry-pi.md>), [raspberry-pi-wake-on-lan](<https://devfeed.tech/tags/raspberry-pi-wake-on-lan.md>), [remote-wake-on-lan-setup](<https://devfeed.tech/tags/remote-wake-on-lan-setup.md>), [server](<https://devfeed.tech/tags/server.md>), [servers](<https://devfeed.tech/tags/servers.md>), [tailscale](<https://devfeed.tech/tags/tailscale.md>), [tailscale-raspberry-pi](<https://devfeed.tech/tags/tailscale-raspberry-pi.md>), [tailscale-wake-on-lan](<https://devfeed.tech/tags/tailscale-wake-on-lan.md>), [tailscale-wol-remote-access](<https://devfeed.tech/tags/tailscale-wol-remote-access.md>), [upsnap-tailscale](<https://devfeed.tech/tags/upsnap-tailscale.md>), [wake-on-lan-from-anywhere](<https://devfeed.tech/tags/wake-on-lan-from-anywhere.md>)

### AI overview

A tutorial on using Tailscale with Wake-on-LAN to remotely wake sleeping or powered-off devices. It describes using a Raspberry Pi, a web app, or a Docker container to send wake-up signals across networks.

### Source excerpt

Learn how to combine Tailscale with Wake-on-LAN to wake sleeping PCs and servers remotely using a Raspberry Pi, UpSnap, or Docker.

## VyOS Project August 2026 Update

DevFeed: [VyOS Project August 2026 Update](<https://devfeed.tech/articles/vyos-project-august-2026-update-53599.md>)

Original publisher: [Read original article](<https://blog.vyos.io/vyos-project-august-2026-update>)

Author: taras@vyos.io (Taras Pudiak)

Published: 2026-09-03T11:44:59Z

Content type: release

Language: en

Sources: [VyOS](<https://devfeed.tech/sources/vyos-blog.md>)

Topics: [software-development](<https://devfeed.tech/topics/software-development.md>), [Firewall](<https://devfeed.tech/topics/firewall.md>), [systems](<https://devfeed.tech/topics/systems.md>), [Hardware](<https://devfeed.tech/topics/hardware.md>), [configuration](<https://devfeed.tech/topics/configuration.md>)

Tags: [acme](<https://devfeed.tech/tags/acme.md>), [bugs](<https://devfeed.tech/tags/bugs.md>), [contributors](<https://devfeed.tech/tags/contributors.md>), [development](<https://devfeed.tech/tags/development.md>), [dns](<https://devfeed.tech/tags/dns.md>), [dynamic-dns](<https://devfeed.tech/tags/dynamic-dns.md>), [firewall](<https://devfeed.tech/tags/firewall.md>), [mac-address](<https://devfeed.tech/tags/mac-address.md>), [netops](<https://devfeed.tech/tags/netops.md>), [network-automation](<https://devfeed.tech/tags/network-automation.md>), [network-os](<https://devfeed.tech/tags/network-os.md>), [network-security](<https://devfeed.tech/tags/network-security.md>), [networking](<https://devfeed.tech/tags/networking.md>), [ntp](<https://devfeed.tech/tags/ntp.md>), [open-source-networking](<https://devfeed.tech/tags/open-source-networking.md>), [pcie](<https://devfeed.tech/tags/pcie.md>), [pki](<https://devfeed.tech/tags/pki.md>), [project-updates](<https://devfeed.tech/tags/project-updates.md>), [qos](<https://devfeed.tech/tags/qos.md>), [sbom](<https://devfeed.tech/tags/sbom.md>), [update](<https://devfeed.tech/tags/update.md>), [vyos](<https://devfeed.tech/tags/vyos.md>), [vyos-project](<https://devfeed.tech/tags/vyos-project.md>)

### AI overview

The August 2026 VyOS development update covers new firewall capabilities, a dynamic DNS overhaul, NTP options, and bug fixes. It also describes a redesigned network-interface naming process that waits for hardware enumeration, applies configured bindings, and reports unresolved or ambiguous hardware instead of guessing.

### Source excerpt

Hello, Community! In August, the VyOS development branch saw work in a few directions at once. Contributors outside the core team landed new firewall capabilities, a dynamic DNS overhaul, NTP options, and fixes for bugs that only turned up once someone ran a configuration nobody had tried before.

## 20 Networking Concepts Explained in 15 Minutes

DevFeed: [20 Networking Concepts Explained in 15 Minutes](<https://devfeed.tech/articles/20-networking-concepts-explained-in-15-minutes-33561.md>)

Original publisher: [Read original article](<https://blog.algomaster.io/p/20-networking-concepts-explained>)

Author: Ashish Pratap Singh

Published: 2026-06-02T05:28:43Z

Content type: tutorial

Language: en

Sources: [AlgoMaster Newsletter](<https://devfeed.tech/sources/algomaster-newsletter.md>)

Topics: [Network](<https://devfeed.tech/topics/network.md>), [domain](<https://devfeed.tech/topics/domain.md>), [Internet](<https://devfeed.tech/topics/internet.md>), [browser](<https://devfeed.tech/topics/browser.md>), [HTTP](<https://devfeed.tech/topics/http.md>)

Tags: [browser](<https://devfeed.tech/tags/browser.md>), [concepts](<https://devfeed.tech/tags/concepts.md>), [dns](<https://devfeed.tech/tags/dns.md>), [domain](<https://devfeed.tech/tags/domain.md>), [http](<https://devfeed.tech/tags/http.md>), [https](<https://devfeed.tech/tags/https.md>), [ipv4](<https://devfeed.tech/tags/ipv4.md>), [ipv6](<https://devfeed.tech/tags/ipv6.md>), [mac-address](<https://devfeed.tech/tags/mac-address.md>), [network](<https://devfeed.tech/tags/network.md>), [networking](<https://devfeed.tech/tags/networking.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>), [recursive-resolver](<https://devfeed.tech/tags/recursive-resolver.md>), [redis](<https://devfeed.tech/tags/redis.md>), [ssh](<https://devfeed.tech/tags/ssh.md>), [wi-fi](<https://devfeed.tech/tags/wi-fi.md>)

### AI overview

A tutorial introducing core networking concepts, including IP addressing, DNS resolution, ports, MAC addresses, and ARP, with examples involving browsers, routers, servers, SSH, HTTP, PostgreSQL, and Redis.

### Source excerpt

Networking can feel overwhelming, but a small set of concepts carries most of the weight in interviews and real-world systems.

## How to use the same DNS for all connections in Ubuntu (and other network privacy tricks)

DevFeed: [How to use the same DNS for all connections in Ubuntu (and other network privacy tricks)](<https://devfeed.tech/articles/how-to-use-the-same-dns-for-all-connections-in-ubuntu-and-other-network-privacy-tricks-27110.md>)

Original publisher: [Read original article](<https://andrea.corbellini.name/2020/04/28/ubuntu-global-dns/>)

Author: andreacorbellini

Published: 2020-04-28T06:30:00Z

Content type: tutorial

Language: en

Sources: [Andrea Corbellini](<https://devfeed.tech/sources/andrea-corbellini.md>)

Topics: [Ubuntu](<https://devfeed.tech/topics/ubuntu.md>), [systemd](<https://devfeed.tech/topics/systemd.md>), [Network](<https://devfeed.tech/topics/network.md>), [DNSSEC](<https://devfeed.tech/topics/dnssec.md>), [TLS (Transport Layer Security)](<https://devfeed.tech/topics/tls.md>), [configuration](<https://devfeed.tech/topics/configuration.md>)

Tags: [dns](<https://devfeed.tech/tags/dns.md>), [dnssec](<https://devfeed.tech/tags/dnssec.md>), [guide](<https://devfeed.tech/tags/guide.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [mac-address](<https://devfeed.tech/tags/mac-address.md>), [network](<https://devfeed.tech/tags/network.md>), [network-manager](<https://devfeed.tech/tags/network-manager.md>), [privacy](<https://devfeed.tech/tags/privacy.md>), [resolved](<https://devfeed.tech/tags/resolved.md>), [systemd](<https://devfeed.tech/tags/systemd.md>), [tls](<https://devfeed.tech/tags/tls.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>), [wifi](<https://devfeed.tech/tags/wifi.md>)

### AI overview

A practical guide to configuring a global DNS server for all Wi-Fi and network connections on Ubuntu 20.04. It explains how systemd-resolved and NetworkManager interact, and introduces DNSSEC, DNS-over-TLS, and randomized MAC addresses.

### Source excerpt

Problem Currently Ubuntu does not offer an easy way to set up a "global" DNS for all network connections: whenever you connect to a new WiFi network, if you don't want to use the DNS server provided by the WiFi, you are forced to go to the network settings and manually set your preferred DNS server. With this brief guide I want to ...

## How to use the same DNS for all connections in Ubuntu (and other network privacy tricks)

DevFeed: [How to use the same DNS for all connections in Ubuntu (and other network privacy tricks)](<https://devfeed.tech/articles/how-to-use-the-same-dns-for-all-connections-in-ubuntu-and-other-network-privacy-tricks-90358.md>)

Original publisher: [Read original article](<https://andrea.corbellini.blog/2020/04/28/ubuntu-global-dns/>)

Author: andreacorbellini

Published: 2020-04-28T06:30:00Z

Content type: tutorial

Language: en

Sources: [Andrea Corbellini](<https://devfeed.tech/sources/andrea-corbellini.md>)

Topics: [Domain Name System (DNS)](<https://devfeed.tech/topics/dns-resolution-process.md>), [DNSSEC](<https://devfeed.tech/topics/dnssec.md>), [Network Configuration](<https://devfeed.tech/topics/network-configuration.md>), [DNS security](<https://devfeed.tech/topics/dns-security.md>), [Ubuntu](<https://devfeed.tech/topics/ubuntu.md>)

Tags: [dns](<https://devfeed.tech/tags/dns.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [mac-address](<https://devfeed.tech/tags/mac-address.md>), [network](<https://devfeed.tech/tags/network.md>), [network-manager](<https://devfeed.tech/tags/network-manager.md>), [privacy](<https://devfeed.tech/tags/privacy.md>), [resolved](<https://devfeed.tech/tags/resolved.md>), [systemd](<https://devfeed.tech/tags/systemd.md>), [ubuntu](<https://devfeed.tech/tags/ubuntu.md>)

### AI overview

This guide explains how to configure Ubuntu to use preferred DNS servers across network connections by changing systemd-resolved and NetworkManager settings. It also covers DNSSEC, DNS-over-TLS, and randomized MAC addresses, including tradeoffs with captive portals and misconfigured DNS records.

### Source excerpt

Problem Currently Ubuntu does not offer an easy way to set up a "global" DNS for all network connections: whenever you connect to a new WiFi network, if you don't want to use the DNS server provided by the WiFi, you are forced to go to the network settings and manually set your preferred DNS server. With this brief guide I want to ...