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counting webpage users with ipv6-problems
![[dk]](/s/countries/dk.gif) Shadow Hawkins on Monday, 14 March 2011 09:00:42
I'm looking for some way to determine if an user coming to our website with ipv4 would have problems with us adding an aaaa-record to the site.
I believe there are 3 states possible:
A: Users system is not ipv6-aware, uses ipv4 just fine
B: Users system is ipv6-ready, uses ipv6 just fine
C: Users system is ipv6-aware, but due to limitations/errors hangs on dual-stacked adresses.
The percentage of C is important, as I've been running dual stack for some time, but am worried if we have lost customers on that reason.
So currently main adress is back to ipv4 only.
counting webpage users with ipv6-problems
![[us]](/s/countries/us.gif) Shadow Hawkins on Monday, 14 March 2011 17:51:23
Since such users would never reach your site I don't see any way that you could detect them other than by surveying your users.
However, it is not established that a real problem exists. Heise.de, for example, has been running dual-stack since September with no reported difficulties.
counting webpage users with ipv6-problems
![[de]](/s/countries/de.gif) Shadow Hawkins on Monday, 14 March 2011 20:54:06
Heise has an article (in German) with 3 recipies (using an image file, CSS, or JavaScript) to warn users of possible problems before going dual-stack.
The trick is always to load a page with the warning from an IPv4 server and then to use an element loaded from a dual-stack server to hide the warning.
On this page (German) they present their activities leading up to going dual-stack:
For one month before 2010-09-16 they announced a feedback email address for problem reports (requested info in case of problems).
On 2010-09-16 they went dual-stack for one day.
After some days of evaluation they permanently switched to dual-stack on 2010-09-29.
These are their results:
At 1 million page hits per day they got 5 mails reporting a problem.
2 could be resolved by restarting the router/Windows PC
2 were internet problems unrelated to IPv6
1 LAN station was misconfigured to advertise IPv6 services, which prevented
a MAC OS X computer to reach heise.de.
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