Okay, this is weird.

I am seeing `tailscaled` spiking up to 250% CPU usage every other minute, with up to 60 MBit/s outgoing traffic on the `tailscale0` interface... and on the `wg0` interface I see the same amount of traffic during that period.

I now disabled wireguard and the issue is gone.

But I have absolutely NO idea why this is happening, what causes it, and why it (seemingly) suddenly started - I did not have this issue earlier today. All I did in between was update the unstable channel, but all packages involved here (tailscale, wireguard) are from stable. So... 🤔 I am at loss...

#tailscale #wireguard #linux #linuxnetworking #networking #sysadmin #nixos

Unser @dd_ix Workshop zum Thema BGP Routing wurde auf den @clt_news angenommen 💪 . Für alle die meine Vorträge der letzten Jahre über Alpine Linux, ifstate oder Linux Router interessant fanden bietet sich hier die Möglichkeit für praktische Erfahrungen und Austausch.

https://chemnitzer.linux-tage.de/2026/de/programm/beitrag/329

#CLT2026 #DDIX #ifstate #RouterKit #linuxnetworking

ifstate 2.2.4 - a tool for declarative network configuration for Linux - was released:
https://codeberg.org/liske/ifstate/releases/tag/2.2.4

The 75th release includes various fixes & improvements like:
- make stable-privacy IPv6 addresses work
- resolve wireguard endpoints *after* configuring the network stack so that DNS resolution could work

This is the first release with published Debian packages: https://ifstate.net/2.2/docs/install/#debian-gnulinux

#linuxnetworking #Debian #ifstate #wireguard

The ifstate git repository on #Codeberg has been moved from my personal account into the RouterKit project at https://codeberg.org/routerkit/ifstate

With moving the project it gains access to CI/CD runners and the first step is to use them to provide #Debian packages from the upcoming 2.2.4 release 🥳
https://codeberg.org/routerkit/-/packages/debian/ifstate/

I already use it in prod for haproxy setups on Debian trixie using different network namespaces for listeners and server access.

#ifstate #RouterKit #haproxy #linuxnetworking #Debian

I don't like to maintain packaging upstream, but… I required netns configuration support on Debian for using network namespaces with haproxy!

Sadly I had to use dh_virtualenv because pyroute2 in Debian sid+stable is to old to have all required netns related features.

Haproxy has namespace support for listeners and servers which allows one to easily build multi-tenant load-balancing setups. 😎

https://codeberg.org/liske/ifstate/src/branch/master/debian

#linuxnetworking #ifstate #haproxy #pyroute2 #Debian

The ifstate 2.2 release - a tool for declarative network configuration for Linux - is available in the most recent stable releases of Alpine Linux 3.23 and NixOS 25.11. 🥳

Fun fact: this is the first NixOS release where you can use a declarative network configuration out of the box 😉

https://ifstate.net/2.2/docs/install/#nixos

#AlpineLinux #ifstate #linuxnetworking #nixos #nixpkgs

#ifstate 2.2.[01] - a tool for declarative network configuration for Linux - was released:
https://codeberg.org/liske/ifstate/releases/tag/2.2.0
https://codeberg.org/liske/ifstate/releases/tag/2.2.1

This release includes:
- support for vlan_flags (loose_binding, …)
- the wgnlpy python dependency has been dropped

…and it also contains several fixes, the most import is a regression: interface defaults were not applied since ifstate 2.0

(already available in @alpinelinux edge + v3.23 and #nixpkgs unstable + 25.11)

#linuxnetworking

Tìm kiếm công cụ trực quan hóa cấu trúc mạng phức tạp, kết hợp Docker, LXC và Linux. Người dùng muốn xem các kết nối veth, bridge giữa các container. Atlas chỉ hỗ trợ Docker. Có gợi ý nào không? #networktopology #visualizetool #docker #lxc #linuxnetworking #networking #cấutrúc mạng #trựcquanchung #tinhtech

https://www.reddit.com/r/selfhosted/comments/1p1i04c/visualize_network_topology/

How to escape the Linux networking stack

https://blog.cloudflare.com/so-long-and-thanks-for-all-the-fish-how-to-escape-the-linux-networking-stack/

#HackerNews #LinuxNetworking #EscapeTutorial #Cloudflare #TechInsights #NetworkingTips