Hurricane Electric's IPv6 Tunnel Broker Forums

Advanced search  


Welcome to Hurricane Electric's forums!

Author Topic: IPv6 browsing timeouts  (Read 1684 times)


  • Newbie
  • *
  • Posts: 1
IPv6 browsing timeouts
« on: September 08, 2014, 09:21:25 AM »


I wonder if someone can help.

I'm having trouble browsing to two website while my IPv6 tunnel is up.  I'm connected through the london server and when I shutdown my tunnel both sites work perfectly.  Other IPv6 websites work perfectly well. and

Any thoughts?



  • Sr. Network Engineer, HE.NET AS6939
  • Administrator
  • Hero Member
  • *****
  • Posts: 1735
Re: IPv6 browsing timeouts
« Reply #1 on: September 08, 2014, 10:33:37 AM »

Check what the pmtud looks like? On native I stay at 1500 to both destinations. If you are behind PPPoE and on a tunnel, you might need to make certain your MTU is configured correctly on both your side of the tunnel and HE's side. The broker interface lets you set the MTU on HE's side. You should be at 1472 (I believe) at max, or can try at the minimum of 1280 and see if that clears it up.