On Wednesday September 15 2021 11:30, you wrote to me:
MvV>> A tunnel is good, native IPv6 is better. I noticed it too when I MvV>> used tunnels. IPv6 over the tunnel is significantky slower than MvV>> IPv4. Up to 50% slower. Native IPv6 is always preferable so we MvV>> we should all keep perstering our ISPs about IPv6.
BR> If you were getting that much of a slowdown, something else was going BR> on.
Sure. The frustrating part is that I was never able to figure out what it was.
BR> Granted the MTU is slightly and I mean slightly less than native BR> IPv6 or IPv4, but it's only by 20 bytes/1500 byte packet. Doing the BR> math, this does NOT equal a 50% lag.
Indeed, so it is not that.
BR> Maybe the issue is that your ISP's path to your IPv6 tunnel provider BR> is not an optimum path? Mine is just a couple hops away so it's not an BR> issue for me.
Unlikely. I used the the he.net POP in Amsterdam, no-one in The Netherlands is more than a couple of hops from AMS-IX.
The prime suspect is still the router that ran my tunnel endpoint back than. A Linksys WRT54G running OpenWrt. But I could bever make sure.
Now it is irrelevent, I now have native IPv6 and I see no significant difference in pefomance between IPv6 and IPv4.
