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WSL 2 Cisco AnyConnect Networking Workaround

Overview

WSL 2 uses a Hyper-V Virtual Network adapter. Network connectivity works without any issue when a VPN is not in use. However when a Cisco AnyConnect VPN session is established Firewall Rules and Routes are added which breaks connectivity within the WSL 2 VM. This issue is tracked WSL/issues/4277

Below outline steps to automatically configure the Interface metric on VPN connect and update DNS settings (/etc/resolv.conf) on connect/disconnect.

Acknowledges

macOS is a Unix, and not built on Linux.

I think most of us realize that macOS isn't a Linux OS, but what that also means is that instead of shipping with the GNU flavor of command line tools, it ships with the FreeBSD flavor. As such, writing shell scripts which can work across both platforms can sometimes be challenging.

Homebrew

Homebrew can be used to install the GNU versions of tools onto your Mac, but they are all prefixed with "g" by default.

All commands have been installed with the prefix "g". If you need to use these commands with their normal names, you can add a "gnubin" directory to your PATH from your bashrc.

Signing VirtualBox Kernel Modules

These are the steps I followed enable VirtualBox on my laptop without disabling UEFI Secure Boot. They're nearly identical to the process described on [Øyvind Stegard's blog][blog], save for a few key details. The images here are borrowed from the [Systemtap UEFI Secure Boot Wiki][systemtap].

Install the VirtualBox package (this might be different for your platform).

src='https://download.virtualbox.org/virtualbox/rpm/fedora/virtualbox.repo'

Install Babel 7 and TypeScript

yarn add --dev \
  @babel/core \
  @babel/cli \
  @babel/preset-env \
  @babel/preset-typescript \
  typescript

	# test directories
	__tests__
	^(?!@serverless/enterprise-plugin/).test.$ # fix for serverless-enterprise
	tests
	powered-test
	*.test.js
	*.tap.js
	*.test.ts
	*tests.html

	{
	"Console Log": {
	"prefix": "cl",
	"body": "console.log('$1')",
	"description": "Inserts console.log('')"
	},
	"Inserts a noop": {
	"prefix": "noop",
	"body": ["() => {}"],
	"description": "Inserts a noop"

	#!/usr/bin/env bash
	START_TIME=$SECONDS
	set -e

	echo "-----START GENERATING HLS STREAM-----"
	# Usage create-vod-hls.sh SOURCE_FILE [OUTPUT_NAME]
	[[ ! "${1}" ]] && echo "Usage: create-vod-hls.sh SOURCE_FILE [OUTPUT_NAME]" && exit 1

	# comment/add lines here to control which renditions would be created
	renditions=(

	Windows Registry Editor Version 5.00

	; Windows terminal
	; Sets up the "Windows Terminal" top level item

	[HKEY_CLASSES_ROOT\Directory\shell\MenuWindowsTerminal]
	"MUIVerb"="Windows Terminal"
	"Icon"="C:\\Program Files\\WindowsApps\\Microsoft.WindowsTerminal_0.10.781.0_x64__8wekyb3d8bbwe\\WindowsTerminal.exe"
	"ExtendedSubCommandsKey"="Directory\\ContextMenus\\MenuWindowsTerminal"

	#!/bin/bash

	set -e

	declare -x USERNAME="$1"
	declare -x USERPIC="$2"

	declare -r DSIMPORT_CMD="/usr/bin/dsimport"
	declare -r ID_CMD="/usr/bin/id"