Giacomo G. psychowood

Docker macvlan + port binding: the problem and a workaround

Context

A common home-lab setup involves a Docker host with dual-stack connectivity (IPv4 + IPv6 on the host), where containers are attached to a macvlan network to appear as first-class devices on the LAN with their own IPv4 addresses.

The motivation for still wanting host-side port bindings is precisely the IPv6 gap: the macvlan network and the containers on it are IPv4-only. If you want to expose a container service over IPv6 — so that it's reachable at [host-ipv6-address]:port — you cannot do it via the macvlan IP. You need the Docker host's IPv6 address to forward traffic into the container, and that requires a working ports: binding on the host's network stack.

The problem

FAQ on the xz-utils backdoor (CVE-2024-3094)

This is a living document. Everything in this document is made in good faith of being accurate, but like I just said; we don't yet know everything about what's going on.

Update: I've disabled comments as of 2025-01-26 to avoid everyone having notifications for something a year on if someone wants to suggest a correction. Folks are free to email to suggest corrections still, of course.

Background

How to get Telegram Bot Chat ID

Content :

Create a Telegram Bot and get a Bot Token
Get Chat ID for a Private Chat
Get Chat ID for a Channel
Get Chat ID for a Group Chat
Get Chat ID for a Topic in a Group Chat

Create a Telegram Bot and get a Bot Token

Download VMware ISOs in this repo

Also I would happy if you visit my site with tech tips!: https://hausmer.com

All license keys and activation files have been removed in accordance with GitHub's Terms of Service.

Only official trial installers are available. Bring your own license (BYOL).

Some random notes on trying (and failing) to get Proxmox as host with 5700G APU GPU PCI Passthrough to Ubuntu guest VM working:

References:

Looks like this one claims to have this working (but I have not tested the method) :
- https://forums.unraid.net/topic/112649-amd-apu-ryzen-5700g-igpu-passthrough-on-692/page/6/#comment-1134140
Others trying to get this working:
https://forum.level1techs.com/t/got-my-ryzen-4750g-apu-igpu-to-pass-through-to-qemu-kvm-vm-but-display-output-is-pixelated-garbage-after-amd-apu-radeon-driver-install-from-amd-or-windows-update/169903

This is just a dump of some interesting undocumented features of webOS (3.8 specifically, on early 2018 4k LG TV) and other development-related tips.

Homebrew app ideas

OpenVPN frontend (OpenVPN itself is easily buildable and runs on webOS TVs: https://discord.com/channels/407937994037919756/835489130967859251/906943542457401395)
App autostart manager - dynamically update arbitrary app config and register it as input (see Registering an app as an input)
webos-vncserver frontend with autostart option
Package hyperiond into Piccap directly
Quick Screenshot (expose HTTP port that just returns PNG of current screen contents)
Custom IR remote codes editor/updater/blaster

I will often run this command to make sure all my docker containers are stopped and removed before running docker-compose up. Sometimes when you restart your system, old containers will start back up automatically in the background.

docker stop $(docker ps -aq) && docker rm $(docker ps -aq)

Backup android app, data included, no root needed, with adb

Note: This gist may be outdated, thanks to all contributors in comments.

adb is the Android CLI tool with which you can interact with your android device, from your PC

You must enable developer mode (tap 7 times on the build version in parameters) and install adb on your PC.

Don't hesitate to read comments, there is useful tips, thanks guys for this !

Use CC-tool for CC253X on my mac

	#!/bin/bash

	# funsplash.sh

	funsplash() {
	clear
	printf -- "\n ========================================\n"
	printf -- "\n This script presents you with 2 options:\n"
	printf -- "\n 1. Choose the width of your pic.\n"
	printf -- "\n 2. Choose the height of your pic.\n"