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[Jim Whitby]

I have found a ( what appears to be )  reliable ipv6 speed test site.

http://www.dslreports.com/speedtest

Having used it for a couple of days, it is seems to be a reasonable test. A free login is required to enable some tests ( ipv6, as an example ) and a history, config, etc
I have a 1G connection from Verizon, using a tunnel from HE.


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[JRMTL]

I find the reliability of dslr test can be iffy with higher speed tiers. ex. your 959 Mbps is not even possible with an mtu of ~1500 (1480) as it exceeds the theoretical maximum speed.

[Jim Whitby]

I find the reliability of dslr test can be iffy with higher speed tiers. ex. your 959 Mbps is not even possible with an mtu of ~1500 (1480) as it exceeds the theoretical maximum speed.

I won't disagree. I have seen higher than 1G speeds on v4 logged, but only in bursts.

I'm comparing these to some other tests I've found, which vary from 3M to 91M for v6 and 2M  for v4 and the reverse also. At lease this is reproducible..

[Jim Whitby]

Replying to my own message:

The test ( so I discovered ) only used ipv4 for the speed test. It verifies ipv6 operation, but doesn't use it for the test.

Sorry for the noise.