Egor Ternovoi cofob

Permanent WSL DNS Fix (WSL 2.2.1+)

If you're encountering ping github.com failing inside WSL with a Temporary failure in name resolution, you're not alone — this has been a long-standing issue, especially when using VPNs or corporate networks.

This issue is now fixed robustly with DNS tunneling, which preserves dynamic DNS behavior and avoids limitations like WSL’s former hard cap of 3 DNS servers in /etc/resolv.conf.

DNS tunneling is enabled by default in WSL version 2.2.1 and later, meaning that if you're still seeing DNS resolution issues, the first and most effective fix is simply to upgrade WSL. Upgrading WSL updates the WSL platform itself, but does not affect your installed Linux distributions, apps, or files.

To upgrade WSL, follow these steps,

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	#!/bin/bash

	ACCOUNT_EMAIL="$1"
	GLOBAL_API_KEY="$2"
	OPTION="${3:-ech}"
	VALUE="${4:-off}"

	if [ -z "${ACCOUNT_EMAIL}" ] \|\| [ -z "${GLOBAL_API_KEY}" ]; then
	echo "Usage: $0 CLOUDFLARE_ACCOUNT_EMAIL CLOUDFLARE_GLOBAL_API_KEY [OPTION] [VALUE]"
	echo "Set specified setting for all zones for given account"

	struct Z;
	struct S<T>(T);

	trait Add<Rhs> {
	type Sum;
	}

	type SumOf<N, M> = <N as Add<M>>::Sum;

	impl<N> Add<N> for Z {

	peers = [
	'tcp://ygg.cofob.ru:80',
	'tcp://ygg-ru.cofob.ru:18000',
	'tcp://ygg-ru2.cofob.ru:80',
	'tcp://46.151.26.194:60575'
	]

	import os, json, random
	if not os.path.isdir('yggspoof'):
	os.mkdir('yggspoof')

	#!/usr/bin/env python
	import logging
	import argparse
	import libvirt
	import sys
	import os
	import subprocess
	import paramiko
	import xml.etree.ElementTree as ET
	from urlparse import urlparse