If you don't have v6 connectivity, then by default DNS lookups will be sorted so that v4 addresses are first. I don't know what went wrong in your case, but I d

If you don't have v6 connectivity, then by default DNS lookups will be sorted so that v4 addresses are first. I don't know what went wrong in your case, but I don't think it had anything to do with IPv6. `getent hosts` returns v6 addresses (only, no v4) if any exist on the hostname you give it, and thus its output is useless for debugging here. You need to check `getent ahosts <hostname>`, which uses the same getaddrinfo() call that most software (including Firefox) uses for DNS lookup. If you have no v6 connectivity then the v4 addresses should be sorted first in the output of that, and v4 will be tried first by your software. Another good test is `wget <url>` which prints the IPs in sorted order (limited to the first 3 though), tries to connect to them one by one and prints any errors it encounters. If `getent ahosts` is showing v6 addresses sorted first, I'd be happy to take a look at your config -- if you pastebin the output of `ifconfig` and /etc/gai.conf then I should be able to tell you what's up. Either you'll have a v6 address you didn't notice or you've somehow configured your system to sort them first even when you only have v4. For some reason, there's a "I saw a colon somewhere, therefore it's IPv6's fault" trap that people keep falling into. Your posts look like an example of that.