Thiago Franco de Moraes tfmoraes

A Short IPv6 Guide for Home IPv4 Admins

This guide is for homelab admins who understand IPv4s well but find setting up IPv6 hard or annoying because things work differently. In some ways, managing an IPv6 network can be simpler than IPv4, one just needs to learn some new concepts and discard some old ones.

Let’s begin.

First of all, there are some concepts that one must unlearn from ipv4:

Concept 1

How to recover lost Python source code if it's still resident in-memory

I screwed up using git ("git checkout --" on the wrong file) and managed to delete the code I had just written... but it was still running in a process in a docker container. Here's how I got it back, using https://pypi.python.org/pypi/pyrasite/ and https://pypi.python.org/pypi/uncompyle6

Attach a shell to the docker container

Install GDB (needed by pyrasite)

apt-get update && apt-get install gdb

	FROM maxmcd/gstreamer:1.14-buster

	WORKDIR /usr/src

	RUN apt-get update && apt-get install -y python3-pip \
	pkg-config \
	libcairo2-dev \
	gcc \
	python3-dev \
	libgirepository1.0-dev \

	from asyncio.events import get_event_loop
	import asyncio
	import wx
	import warnings
	from asyncio.futures import CancelledError
	from collections import defaultdict


	GlobalWxAsyncApp = None

	<!DOCTYPE html>
	<html>
	<head><title>Javascript RT</title></head>
	<style>canvas {width: 1280px; height: 768px}</style>
	<body>

	<canvas id="framebuffer"></canvas>

	<script type="text/javascript">
	/* Fizzlefade using a Feistel network.

	from glfwpy.glfw import (AUTO_POLL_EVENTS, OPENED, OPENGL_CORE_PROFILE,
	OPENGL_FORWARD_COMPAT, OPENGL_PROFILE, OPENGL_VERSION_MAJOR,
	OPENGL_VERSION_MINOR, WINDOW,
	Enable, GetWindowParam, Init, OpenWindow, OpenWindowHint,
	SetKeyCallback, SetWindowTitle, SwapBuffers, Terminate)
	import numpy as np
	from OpenGL.arrays import ArrayDatatype
	from OpenGL.GL import (GL_ARRAY_BUFFER, GL_COLOR_BUFFER_BIT,
	GL_COMPILE_STATUS, GL_FALSE, GL_FLOAT, GL_FRAGMENT_SHADER,
	GL_LINK_STATUS, GL_RENDERER, GL_SHADING_LANGUAGE_VERSION,