[ipv6-wg] New Document: "IPv6 Troubleshooting for Residential ISP Helpdesks"

On Sun, Oct 26, 2014 at 10:52 AM, Niall O'Reilly <niall.oreilly at ucd.ie> wrote:
> In the case
>   mentioned, it looks as if application error HTTP 404 is being
>   interpreted as indicating IPv6 network target unreachable.  Isn't
>   this a layering misinterpretation?

Yes.  But I have limits on what I can do in JavaScript, without
invoking browser specific or even operating system specific code, or
depending on plugins.  I can (as far as I know) only detect success,
failure, and timeout.  Above all, I want the site to operate purely on
simple clean javascript that works on any popular browser, and
ideally, even the unpopular javascript-enabled browsers.

FWIW: I always check IPv4 as a control measure.  I only complain when
IPv6 fails but IPv4 worked.  This catches the case of apache httpd
being down; it catches power down; it doesn't catch more subtle
problems.  When the control is down, I discount it from the list of
failures (grey instead of red; and the ISP test in particular stops
counting it).

Not perfect; but if you can help me improve on this in a way that
keeps my goal of simple javascript, I'm very much interested in your
ideas.  In some cases, it may be as simple as expertise (since
JavaScript is not my "native tongue", so to speak).

Thanks for the feedback!  And thanks for taking the time to read the
document.   A lot of people have put a lot of time into that document
already.  I'm hoping ultimately the community finds the document (and
the site) useful.


-- 
 Jason Fesler, email/jabber <jfesler at gigo.com> resume: http://jfesler.com
 "Give a man fire, and he'll be warm for a day;
 set a man on fire, and he'll be warm for the rest of his life."