Youtube-over-IPv6
FAHAD ALI KHAN
fahad.alikhan at gmail.com
Fri Jan 29 07:57:42 CET 2010
>From Pakistan, i observe the streaming through pure IPv4, not through v6 in
v4 tunnels.
Nor i find AAAA entries against www.youtube.com.
*Regards
Fahad Ali Khan*
On Fri, Jan 29, 2010 at 11:48 AM, Shaun Ewing <s.ewing at aussiehq.com.au>wrote:
>
>
> On 29/01/10 11:45 AM, "Erik Kline" <ek at google.com> wrote:
>
> > But hopefully it's working well and correctly.
>
> Good work, but there's a huge latency difference between v4 and v6 where I
> am (Australia) and I seem to get v6 addresses out of a Google Ireland range
> (2a00:1450::/32) from one set of our Google over V6 resolvers and the usual
> Google range I'm used to (2001:4860::/32) from another set of our
> resolvers.
>
> Despite that, there's no noticeable difference to user experience (ie:
> videos seem to play fine) so I guess that's the key factor here.
>
> Anyway, some info below if it's any use:
>
> Our main resolvers use anycast within our network, but when using the ones
> in my local city (CBR - which query from 203.88.112.0/24):
>
> IPv4:
>
> $ dig +short v21.lscache1.l.google.com A
> 74.125.109.30
>
> --- 74.125.109.30 ping statistics ---
> 5 packets transmitted, 5 packets received, 0.0% packet loss
> round-trip min/avg/max/stddev = 5.132/5.264/5.560/0.154 ms
>
> And
>
> traceroute to 74.125.109.30 (74.125.109.30), 64 hops max, 52 byte packets
> 1 172.20.10.254 (172.20.10.254) 1.673 ms 1.064 ms 1.265 ms
> 2 172.16.0.1 (172.16.0.1) 0.257 ms 0.164 ms 0.166 ms
> 3 vl2.cor1.cbr1.as24557.net.au (203.88.112.252) 6.260 ms 9.195 ms
> 1.166
> ms
> 4 gi0-2-4.bdr2.cbr1.as24557.net.au (203.88.112.18) 0.582 ms 0.522 ms
> 0.468 ms
> 5 gi0-2-4.bdr1.syd1.as24557.net.au (203.88.112.21) 5.492 ms 5.167 ms
> 5.044 ms
> 6 as15169.sydney.pipenetworks.com (218.100.2.98) 5.106 ms 5.113 ms
> 5.287 ms
> 7 64.233.174.253 (64.233.174.253) 5.515 ms 5.220 ms 5.738 ms
> 8 74.125.109.30 (74.125.109.30) 5.210 ms 5.300 ms 5.384 ms
>
> Vs
>
> IPv6:
>
> $ dig +short v21.lscache1.l.google.com AAAA
> 2a00:1450:4001:3::1e
>
> --- 2a00:1450:4001:3::1e ping6 statistics ---
> 5 packets transmitted, 5 packets received, 0.0% packet loss
> round-trip min/avg/max/std-dev = 351.175/354.353/355.477/1.600 ms
>
> And
>
> traceroute6 to 2a00:1450:4001:3::1e (2a00:1450:4001:3::1e) from
> 2405:5000:XX, 64 hops max, 12 byte packets
> 1 2405:5000:XX 0.882 ms 0.766 ms 0.793 ms
> 2 vl2-gw.cbr1.as24557.net.au 0.478 ms 0.389 ms 0.414 ms
> 3 gi0-1-3.bdr2.cbr1.as24557.net.au 0.610 ms 0.541 ms 0.469 ms
> 4 ge-0-0-0-700.bdr01.cbr01.act.vocus.net.au 0.714 ms 0.759 ms 0.699
> ms
> 5 2402:7800:0:2::35 4.757 ms 6.414 ms 4.866 ms
> 6 ge-0-0-2.bdr02.syd01.nsw.vocus.net.au 4.922 ms 4.945 ms 4.758 ms
> 7 2402:7800:0:2::3e 5.571 ms 11.963 ms 5.184 ms
> 8 * * *
> 9 * * *
>
> And when querying our other set of resolvers in SYD (these query from
> 113.20.0.0/24):
>
> IPv4:
>
> $ dig +short v21.lscache1.l.google.com A
> 74.125.98.30
>
> --- 74.125.98.30 ping statistics ---
> 5 packets transmitted, 5 packets received, 0.0% packet loss
> round-trip min/avg/max/stddev = 276.145/276.523/277.288/0.451 ms
>
> And
>
> traceroute to 74.125.98.30 (74.125.98.30), 64 hops max, 52 byte packets
> 1 172.20.10.254 (172.20.10.254) 1.834 ms 1.065 ms 1.072 ms
> 2 172.16.0.1 (172.16.0.1) 0.245 ms 0.169 ms 0.182 ms
> 3 vl2.cor1.cbr1.as24557.net.au (203.88.112.252) 0.732 ms 0.801 ms
> 0.733
> ms
> 4 gi0-2-4.bdr2.cbr1.as24557.net.au (203.88.112.18) 0.668 ms 0.563 ms
> 0.522 ms
> 5 gi0-2-4.bdr1.syd1.as24557.net.au (203.88.112.21) 5.993 ms 4.816 ms
> 4.714 ms
> 6 as15169.sydney.pipenetworks.com (218.100.2.97) 5.656 ms 6.546 ms
> 5.921 ms
> 7 66.249.95.234 (66.249.95.234) 6.634 ms 5.372 ms 5.466 ms
> 8 209.85.249.52 (209.85.249.52) 108.913 ms 105.382 ms 105.407 ms
> 9 209.85.255.34 (209.85.255.34) 107.364 ms 134.131 ms 107.195 ms
> 10 72.14.232.114 (72.14.232.114) 176.733 ms 177.158 ms 175.981 ms
> 11 209.85.242.233 (209.85.242.233) 181.669 ms 181.570 ms 181.603 ms
> 12 66.249.94.39 (66.249.94.39) 219.298 ms 220.909 ms
> 209.85.242.235 (209.85.242.235) 182.338 ms
> 13 209.85.241.53 (209.85.241.53) 276.365 ms 278.211 ms 276.176 ms
> 14 66.249.94.90 (66.249.94.90) 219.789 ms
> 216.239.43.215 (216.239.43.215) 351.971 ms
> 66.249.94.90 (66.249.94.90) 219.523 ms
> 15 * * *
> 16 74.125.98.30 (74.125.98.30) 276.886 ms
> 216.239.43.215 (216.239.43.215) 277.086 ms
> 74.125.98.30 (74.125.98.30) 276.653 ms
>
> vs
>
> IPv6:
>
> $ dig +short v21.lscache1.l.google.com AAAA
> 2001:4860:4001:402::1e
>
> --- 2001:4860:4001:402::1e ping6 statistics ---
> 5 packets transmitted, 5 packets received, 0.0% packet loss
> round-trip min/avg/max/std-dev = 208.170/210.646/216.873/3.290 ms
>
> And
>
> traceroute6 to 2001:4860:4001:402::1e (2001:4860:4001:402::1e) from
> 2405:5000:XX, 64 hops max, 12 byte packets
> 1 2405:5000:XX 1.301 ms 0.852 ms 1.014 ms
> 2 vl2-gw.cbr1.as24557.net.au 0.582 ms 0.418 ms 0.464 ms
> 3 gi0-1-3.bdr1.syd1.as24557.net.au 5.688 ms 5.097 ms 26.557 ms
> 4 as15169.ipv6.sydney.pipenetworks.com 5.295 ms 8.224 ms 5.466 ms
> 5 * * *
> 6 * * *
>
> :-)
>
> -Shaun
>
>
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