Disabling IPv6 seems to solve AEBS connection drop problem

Question

As I posted earlier, I have had (like many others) a lot of problem with my Aiport ExtremeN base station. Connection was dropping every 20 minutes or so, for ethernet as well as Airport. I know it's not my DSL connection, I have used a NetGear WRT300N with no issue whatsoever in over a year.
I was really frustrated with the 180€ spent on the AEBS and about to try downgrading to earlier 7.1.1 firmware when I tried to switch the default IPv6 setting ("Tunnel") to "Local link only" (sorry if the translation is not accurate, my Airport Utility is in french).
3 days now with not a single connection dropout or AEBS reboot !
Can't explain why that is, but it works for me with the 7.2.1 firmware and Mac OS X 10.4.10 with last updates.
I thought I'd share and see if anyone has had the same experience (or can explain why !).

Answer 1

Glad I could help
I thought this was worth having a topic not buried into the forums.
Funny, now that I have found this, the Google search for "IPv6 AEBS" gives quite instructing results raising security issues :
http://arstechnica.com/journals/apple.ars/2007/2/14/7063
http://www.karppinen.fi/2007/04/17/turning-a-feature-into-a-flaw/
{quote}If you don't block incoming IPv6 sessions, you can actually connect to a Mac sitting behind the Airport Extreme from the outside, using SSH or FTP over IPv6, assuming those services are enabled. Long story short, you've lost your first line of defense on your home network for IPv6-enabled servers on your Macs.{quote}
Now I am warned about it !