Bug#913517: hplip: patch to support IPv6
On Sun, Nov 11, 2018 at 02:47:12PM -0500, Christopher Martin wrote:
> Package: hplip
> Version: 3.18.10+dfsg0-2
> Severity: wishlist
> Tags: patch ipv6
>
> Please see https://bugs.launchpad.net/hplip/+bug/1724089 for the
> original report, which includes a patch that adds IPv6 support to
> libhpmud.
>
> The patch ensures that libhpmud properly resolves IPv6 addresses and
> hostnames. I've tested it against the latest hplip (3.18.10) and it
> works well.
Having had the experience with dealing with IPv6 support in apt, I am not
convinced it's a good idea. The assumption that
"The system's C library automatically selects the appropriate addresses (for example, it omits ipv6 addresses if there is no ipv6 connectivity)."
is wrong. We've heard a lot of reports from people without _working_
IPv6 for which apt did not work, which forced me to implement a variant
of happy eyeballs.
The patch in question does not try multiple address families in parallel,
nor does it seem to have any time out at all, meaning it will get stuck
indefinitely trying to connect to a broken ipv6 host.
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