Postcards from the Bleeding Edge
Friday, March 14, 2008

  IPv6 and google

Yea! One down - six to go (if lwn.net, slashdot.org, technorati, andrewsullivan, blogger.com, and Doc Searls adopted ipv6 I'd handle 80% of my net needs). It's time to turn ipv6 up!!!

Just did a traceroute6 of ipv6.google.com FROM AUSTRALIA!! - 8 hops! (yea, there's at least one tunnel in there, skewing the statistics) and it seems faster than the normal ipv4 version (20-22 hops), perhaps due to the dramatically reduced number of hops, or that my provider isn't shaping ipv6 packets, or just delusion... 


traceroute to ipv6.l.google.com (2001:4860:0:2001::68) from 2001:388:f000::9bb, 30 hops max, 16 byte packets
 1  2001:388:f000::9ba (2001:388:f000::9ba)  32.86 ms  30.1 ms  31.464 ms
 2  ge-1-0-0.bb1.a.syd.aarnet.net.au (2001:388:1:5001:212:1eff:fe8e:51fe)  31.081 ms  30.497 ms  32.046 ms
 3  pao-a-bb1.aarnet.net.au (2001:388:1::13)  187.837 ms  186.293 ms  187.517 ms
 4  paix.ipv6.he.net (2001:504:d::10)  188.402 ms  185.233 ms  186.553 ms
 5  10g-2-4.core1.ash1.ipv6.he.net (2001:470:0:35::2)  262.67 ms  269.186 ms  262.203 ms
 6  pr61.iad07.net.google.com (2001:504:0:2:0:1:5169:1)  276.096 ms  261.268 ms  261.907 ms
 7  * * *
 8  2001:4860:0:2001::68 (2001:4860:0:2001::68)  263.054 ms  263.585 ms  260.878 ms


Can anycast be far behind?

I sure hope turning IPv6 up becomes a trend this year! I'm off to do a little packet sniffing on my local net to see what's goin on under the covers... Ipv6 shouldn't seem this much faster to me...

Update: Packet loss seems to be less, on average, between ipv6.google.com and me in Oz, than between me and google over ipv4. So I'm seeing more re-transmits on ipv4, which slows the apparent speed down vs a vs ipv6... That's it. Aside from that, the packet sizes are slightly larger on ipv4....

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  11:23 PM
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David Täht writes about politics, space, copyright, the internet, audio software, operating systems and surfing.


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