@dominikh: thanks for having tried.
@michael: Since the latest release is very recent, I don't think Ubuntu provides it already (i'm not working with this distro). You have to watch the repos by yourself, find a third-party binary package for your distro... or compile.
Also watch http://curl.haxx.se/download.html (nothing for you currently, i'm afraid).

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** [bugs:#1424] happy eyeballs problem with host unaccessible over ipv6**
**Status:** open-confirmed
**Created:** Fri Sep 19, 2014 05:50 AM UTC by Michael Heuberger
**Last Updated:** Wed Jan 14, 2015 01:13 AM UTC
**Owner:** Daniel Stenberg
Running `curl https://sublime.wbond.net/channel.json` in the console tell me, its unreachable:
$ curl https://sublime.wbond.net/channel.json
curl: (7) Failed to connect to sublime.wbond.net port 443: Network is unreachable
But I can download that json from any browser instance.
Weird. How come?
Here more info. I am on Ubuntu 14.04:
$ curl -V
curl 7.37.1 (x86_64-pc-linux-gnu) libcurl/7.37.1 OpenSSL/1.0.1f zlib/1.2.8 libidn/1.28 librtmp/2.3
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp smtp smtps telnet tftp 
Features: AsynchDNS GSS-Negotiate IDN IPv6 Largefile NTLM NTLM_WB SSL libz TLS-SRP 
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