Apr 2, 2016 · As this is probably a shell problem and not a 'curl' problem (you didn't build cURL yourself from source, did you?), it might be good to mention whether you're on Linux/Windows/etc.

Aug 11, 2025 · The curl: (6) Could not resolve host error is a common yet often perplexing issue encountered by Linux users. This error signifies that the curl command-line tool, a versatile utility for …

When asked to use HTTP/3, curl issues a separate attempt to use older HTTP versions with a slight delay, so if the HTTP/3 transfer fails or is slow, curl still tries to proceed with an older HTTP version.

When telling curl to do something, you invoke curl with zero, one or several command-line options to accompany the URL or set of URLs you want the transfer to be about. curl supports over two …

Single page documents with the most important curl options explained Download Download View curl-cheat-sheet on GitHub

The “curl: (6) Could not resolve host” error occurs when the curl command is used with incorrect syntax or the DNS nameserver is missing.

You can tell curl to use ipv4 for name resolving explicitly by providing the --ipv4 or -4 command line argument. As an alternative to disabling ipv6 system-wide.

Jul 24, 2023 · The curl: (6) could not resolve host error in Linux primarily relates to wrongful/missing DNS nameserver setup or a random syntax error that can be scanned and fixed.

This is a detailed and totally free book, available online (and as a PDF as a link from there) that explains everything there is to know about curl, libcurl and the associated project.

What is the latest curl? The most recent stable version is 8.18.0, released on 2026-01-07. Currently, 102 of the listed downloads are of the latest version. Where is the code? Check out the latest source …