galvesribeiro

Why Your Ubiquiti EFG Can't Push 25 Gbps Inter-VLAN — and What's Actually Going On

Or: How I Reproduced the Problem on x86, Tried to Load the Missing Modules on the Real Device, and What That Tells Us About Ubiquiti's Kernel

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TL;DR

Ubiquiti markets the Enterprise Fortress Gateway (EFG) as a 25-gigabit-class router. The product page lists two 25 GbE SFP28 ports for WAN/LAN, and Ubiquiti positions the device as a flagship for medium and large enterprise deployments. Its silicon — a Marvell Octeon CN9670 — supports hardware-accelerated forwarding through purpose-built network engines (NIX) that should sustain tens of millions of packets per second. The UDM Beast, Ubiquiti's next-generation gateway, pairs a Marvell Octeon CN10K SoC (with ARM Neoverse N2 cores) with a dedicated Marvell Prestera-class switching ASIC accessed via PCIe — capabilities that, properly used, would offload most of the per-packet forwarding work into hardware.

walruscraft

Setup a Linux kernel development environment easily with virtme-ng.

The instructions cover cloning and building Linux kernel and the useful qemu wrapper virtme-ng. After performing these actions, a virtual machine is started with the newly built Linux kernel and the current local rootfs - same user and files. This allows building and testing kernel modules and user-space apps with a custom/specific kernel.

The kernel compilation phase can be made very simple with virtme-ng itself, so be sure to check out its capabilities by running vng --help after installing it. Here the kernel building instructions more manual and detailed to radically reduce the build time by removing certain features you normally don't care about in such a setup.

While virtme-ng makes it easy to run a kernel on the local root filesystem for debugging, it is not your original system. In most cases today your Linux runs with systemd init, which is quite a complex environment. The virtme-ng prroject relaces your init with a

mcheshkov

#!/bin/bash

FEDORA_MAJOR="38"
ARCH="x86_64"
KERNEL_VERSION="6.3.8-200.fc38"
ZFS_VERSION="2.1.12"

podman run \
    --interactive \
    --tty \

Overbryd

remote-control:
  control-enable: yes
server:
  do-ip6: no
  do-ip4: yes
  do-udp: yes
  tls-cert-bundle: /etc/ssl/certs/ca-certificates.crt
  num-threads: 4
  # Enable logs
  verbosity: 1

Lukasa

import os
import socket
import struct

# These constants map to constants in the Linux kernel. This is a crappy
# way to get at them, but it'll do for now.
RTMGRP_LINK = 1

NLMSG_NOOP = 1
NLMSG_ERROR = 2

renestalder

Facebook: Unfollow people and pages

See comments section for more up-to-date versions of the script. The original script is from 2014 and will not work as is.

1. Open news feed preferences on your Facebook menu (browser)
2. Click people or pages
3. Scroll down (or click see more) until your full list is loaded
4. Run the script in your browser console

Facebook will block this feature for you while you use it, depending on how much entities you try to unfollow. It automatically unblocks in a couple of hours and you will be able to continue.