Bug#684407: apt: connection to Debian mirror with both A and AAAA records fails if client has no routable IPv6 address
> Package: apt
> Version: 0.9.7.2
> Severity: important
> Tags: ipv6
...
> Whenever a host resolves to multiple addresses, APT tries to connect to all
> of them, one by one, before giving up and displaying the error message of
> the last attempt.
> So, it seems APT was unable to connect to ftp.fi.debian.org's IPv4 address
> due to an unknown reason, then tried the v6 address and failed, righly so.
I'm seeing this problem right now with the same mirror
(ftp.fi.debian.org). Indeed
tcpdump shows that APT actually tries IPv4, but the server just replies with
a single RST packet. So it's just the error message that's very misleading,
the actual operation of APT is correct. Maybe the error message could be
improved somehow since I also first thought that APT was trying to use IPv6
(which my ISP doesn't support).
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