topic Re: www.java.com in IPv6 Trial

www.java.com

jelv — Sun, 20 Apr 2014 10:53:03 GMT

Can someone check that if they are finding www.java.com is unbelievably slow over IPv6 please.
Edit: Or possibly not working at all. nslookup gives both IPv4 and IPv6 addresses, but until I forced IPv4 only for that site on my wife's PC it just wasn't responding.

Re: www.java.com

Midnight_Caller — Sun, 20 Apr 2014 11:12:12 GMT

Works ok on IPv4, I don't have IPv6 to test it with.

Re: www.java.com

SimonHobson — Sun, 20 Apr 2014 11:23:30 GMT

Working for me, and I tried it with wget (so I could force -4 and -6) and got much the same performance on both IPv4 and IPv6

Re: www.java.com

brueton — Sun, 20 Apr 2014 12:05:44 GMT

wget -4 www.java.com is OK.
wget -6 www.java.com: Connection timed out.

Re: www.java.com

avatastic — Sun, 20 Apr 2014 13:25:31 GMT

adw@thunderbolt:~$ wget -6 http://www.java.com/ -O /dev/null
--2014-04-20 14:24:35-- http://www.java.com/
Resolving www.java.com (www.java.com)... 2a02:26f0:5a:281::1ba3, 2a02:26f0:5a:282::1ba3
Connecting to www.java.com (www.java.com)|2a02:26f0:5a:281::1ba3|:80... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: http://www.java.com/en/ [following]
--2014-04-20 14:24:35-- http://www.java.com/en/
Reusing existing connection to [www.java.com]:80.
HTTP request sent, awaiting response... 200 OK
Length: 7036 (6.9K) [text/html]
Saving to: ‘/dev/null’
100%[======================================>] 7,036 --.-K/s in 0.003s
2014-04-20 14:24:36 (2.42 MB/s) - ‘/dev/null’ saved [7036/7036]
Working fine here, on a tunnel.

Re: www.java.com

Anonymous — Sun, 20 Apr 2014 14:03:06 GMT

I just tried both IPv4 and IPv6 in different browser tabs, and they both appear to be well !

Re: www.java.com

jelv — Sun, 20 Apr 2014 14:18:26 GMT

Caching seems to come in to play. Just tried it on my own PC and it responded immediately but CTRL+F5 and it was very slow again.

Re: www.java.com

AndyH — Sun, 20 Apr 2014 16:03:01 GMT

I'm not sure if it's related, but I've had quite a few IPv6 pages hanging today. Facebook took 30 secs to load just now (waiting for fbstatic-a.akamaihd.net).

Re: www.java.com

AndyH — Tue, 22 Apr 2014 08:09:29 GMT

@ jelv - I think it's an issue their end as the site is not dual stacked anymore. I tried manually putting in the address [2a02:26f0:5a:281::1ba3] and it's not working today.

Re: www.java.com

MJN — Tue, 22 Apr 2014 08:30:47 GMT

It sounds like you might have a local issue. Having to wait 30s or so for a page to begin to load is a common symptom seen when IPv6 transport availability is assumed but it's not working correctly. Does my 'What is my IPv6 address?' page work for you? If not, do you get an IPv4 address when visiting the dual-stacked version?
Edit: I've just noticed that my PN /56 prefix changed recently. If yours has too have you updated any static IPv6 address assignments or other hardwired configuration you had in place?

Re: www.java.com

jelv — Tue, 22 Apr 2014 08:39:03 GMT

I'm having no trouble with other IPv6 sites. The link you gave gives my IPv6 address, I have the Firefox 4or6 extension and see other sites come up in IPv6.

Re: www.java.com

jelv — Tue, 22 Apr 2014 08:41:37 GMT

Quote from: MJN
Edit: I've just noticed that my PN /56 prefix changed recently. If yours has too have you updated any static IPv6 address assignments or other hardwired configuration you had in place?

I'd spot that because my ping graph would break!

In any case I have no assignments or hardwired configuration.

Re: www.java.com

AndyH — Tue, 22 Apr 2014 08:50:05 GMT

The site just times out now if you try and access it over IPv6:

Quote
andrew@ubuntu:~$ wget -6 www.java.com
--2014-04-22 09:48:33-- http://www.java.com/
Resolving www.java.com (www.java.com)... 2a02:26f0:5a:282::1ba3, 2a02:26f0:5a:281::1ba3
Connecting to www.java.com (www.java.com)|2a02:26f0:5a:282::1ba3|:80...

Re: www.java.com

MJN — Tue, 22 Apr 2014 09:10:19 GMT

It works okay for me, for what it's worth:

wget -6 http://www.java.com/ -O /dev/null
--2014-04-22 09:27:03--  http://www.java.com/
Resolving www.java.com (www.java.com)... 2a02:26f0:5a:281::1ba3, 2a02:26f0:5a:282::1ba3
Connecting to www.java.com (www.java.com)|2a02:26f0:5a:281::1ba3|:80... connected.
HTTP request sent, awaiting response... 302 Moved Temporarily
Location: http://www.java.com/en/ [following]
--2014-04-22 09:27:06--  http://www.java.com/en/
Reusing existing connection to www.java.com:80.
HTTP request sent, awaiting response... 200 OK
Length: 7036 (6.9K) [text/html]
Saving to: `/dev/null'
100%[======================================>] 7,036       --.-K/s   in 0s      
2014-04-22 09:27:06 (141 MB/s) - `/dev/null' saved [7036/7036]

Re: www.java.com

Anonymous — Tue, 22 Apr 2014 09:23:05 GMT

I'm having no trouble accessing http://www.java.com using IPv6 (Hurricane Electric tunnel).
Although interestingly if I use http://java.com my browser defaults to IPv4, but http://www.java.com uses IPv6.
My Firefox "4or6" add-on shows the following addresses for http://www.java.com (see attached screenshot below).

Re: www.java.com

SimonHobson — Tue, 22 Apr 2014 09:45:52 GMT

Might be worth running an IPv6 traceroute and see if there is a routing issue that affects PlusNet IPv6 but not Hurricane Elect.
I get :

# traceroute6 -I www.java.com
traceroute to www.java.com (2a02:26f0:5a:281::1ba3), 30 hops max, 80 byte packets
 1  bubbles.thehobsons.co.uk (2001:470:1f09:baa::1)  1.444 ms  1.426 ms  1.406 ms
 2  SimonH-1.tunnel.tserv5.lon1.ipv6.he.net (2001:470:1f08:baa::1)  23.582 ms  26.732 ms  29.444 ms
 3  v316.core1.lon1.he.net (2001:470:0:67::1)  31.150 ms  31.179 ms  31.171 ms
 4  10ge3-1.core1.lon2.he.net (2001:470:0:2cd::1)  31.128 ms  31.114 ms  31.090 ms
 5  ge-2-1-0-zpr1.lnt.cw.net (2001:7f8:4::4f9:1)  31.028 ms  31.002 ms  30.983 ms
 6  so-0-1-0-r1-IPv6.de.cw.net (2001:5000:0:1::1)  30.981 ms  27.924 ms  27.644 ms
 7  akamai-gw2.lns.cw.net (2001:5000:1100:9::2)  27.704 ms  24.903 ms  24.836 ms
 8  2a02:26f0:5a:281::1ba3 (2a02:26f0:5a:281::1ba3)  23.967 ms  21.118 ms  21.073 ms

Re: www.java.com

jelv — Tue, 22 Apr 2014 10:00:18 GMT

Not working:

Quote from: AndyH
Connecting to www.java.com (www.java.com)|2a02:26f0:5a:282::1ba3|:80...

Working:

Quote from: MJN
Connecting to www.java.com (www.java.com)|2a02:26f0:5a:281::1ba3|:80... connected.

Significant?

Re: www.java.com

SimonHobson — Tue, 22 Apr 2014 10:06:24 GMT

Quote from: jelv
Significant?

Quite possibly.
It looks like Java.com is on Akamai's delivery network, and that will use various techniques to spread load/connect users to a "near" node. it could be that not all their nodes are OK.

Re: www.java.com

AndyH — Tue, 22 Apr 2014 10:15:34 GMT

I've tried both v6 addresses and neither work for me.

Quote
~ Andrew$ traceroute6 www.java.com
traceroute6: Warning: e7075.dscx.akamaiedge.net has multiple addresses; using 2a02:26f0:5a:281::1ba3
traceroute6 to e7075.dscx.akamaiedge.net (2a02:26f0:5a:281::1ba3) from 2a02:16c8:2000:1100:2d05:1f12:xxxx:xxxx, 64 hops max, 12 byte packets
1 2a02:16c8:2000:1100:5246:5dff:xxxx:xxxx 0.400 ms 0.388 ms 0.328 ms
2 2a02:16c8:0:1::1a 4.664 ms 4.988 ms 6.161 ms
3 2a02:16c8:1:2::13 4.638 ms 4.694 ms 4.190 ms
4 2a02:16c8::b 4.393 ms 4.400 ms 4.315 ms
5 * *
lonap.he.net 14.801 ms
6 10ge3-1.core1.lon2.he.net 4.498 ms 9.128 ms 4.502 ms
7 ge-2-1-0-zpr1.lnt.cw.net 4.627 ms 4.494 ms 4.564 ms
8 so-0-1-0-r1-ipv6.de.cw.net 4.947 ms 5.056 ms 4.846 ms
9 akamai-gw2.lns.cw.net 5.280 ms 5.314 ms 5.793 ms
10 * * *
11 * * *

Also tried different gateways, and no difference.

Re: www.java.com

SimonHobson — Tue, 22 Apr 2014 10:25:41 GMT

Try it with the "-I" option - that uses ICMP Ping rather than random UDP ports. I find it's quite common that UDP traceroute fails to find the final device because it just drops packets to services it isn't hosting (most of my systems do that) and so you just get rows of asterisks. It's less common to block pings.