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aont/0 WSL1 DNS Workaround Disable Auto resolv.conf and Populate DNS from Windows Routes.md

Last active December 19, 2025 01:49
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0 WSL1 DNS Workaround Disable Auto resolv.conf and Populate DNS from Windows Routes.md

Workaround for WSL1 DNS issue

  • Prevent WSL from overwriting DNS settings by setting generateResolvConf = false in /etc/wsl.conf.
  • Pull active DNS servers from Windows (based on default IPv4/IPv6 routes and interface metrics) using PowerShell, ensuring the most relevant adapters are used.
  • Write a stable Linux resolver configuration by converting the Windows DNS list into nameserver entries and saving it to /etc/resolv.conf (with CRLF normalization via tr -d '\r').
echo -e '[network]\ngenerateResolvConf = false' >> /etc/wsl.conf

/mnt/c/Windows/System32/WindowsPowerShell/v1.0/powershell.exe -NoProfile -Command '$ifs=@(Get-NetRoute -DestinationPrefix "0.0.0.0/0","::/0" -ErrorAction SilentlyContinue | Sort-Object RouteMetric,InterfaceMetric | Select-Object -ExpandProperty InterfaceIndex -Unique); $dns=foreach($i in $ifs){ (Get-DnsClientServerAddress -InterfaceIndex $i).ServerAddresses }; $dns | Where-Object { $_ } | Select-Object -Unique | ForEach-Object { "nameserver $_" }' | tr -d '\r' > /etc/resolv.conf
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