From HE takes approximately 60-120 seconds for each connection to ipv6.comcast.com to start loading data. Data loads at normal speed thereafter.
However, this affects each element and each redirect. There are about 4 redirects between http://ipv6.comcast.com and actually getting data back and about 20 elements that comprise the page once you get there, so, it takes a LONG time to get to the point of seeing anything on the page. Does not appear to be related to IPv6 transit times or connectivity: [owen-delongs-macbook-pro:~] owen% ping6 ipv6.comcast.com PING6(56=40+8+8 bytes) 2001:470::a9:225:4bff:feb9:2be --> 2001:558:1002:5:68:87:64:59 16 bytes from 2001:558:1002:5:68:87:64:59, icmp_seq=0 hlim=51 time=88.698 ms 16 bytes from 2001:558:1002:5:68:87:64:59, icmp_seq=1 hlim=51 time=92.542 ms 16 bytes from 2001:558:1002:5:68:87:64:59, icmp_seq=2 hlim=51 time=92.622 ms ^C --- ipv6.comcast.com ping6 statistics --- 3 packets transmitted, 3 packets received, 0.0% packet loss round-trip min/avg/max/std-dev = 88.698/91.287/92.622/1.831 ms [owen-delongs-macbook-pro:~] owen% host ipv6.comcast.com ipv6.comcast.com has address 68.87.64.59 ipv6.comcast.com has address 69.252.76.96 ipv6.comcast.com has IPv6 address 2001:558:1002:5:68:87:64:59 ipv6.comcast.com has IPv6 address 2001:558:1004:9:69:252:76:96 Though, interestingly, the published IPv4 A records are not responding to ping: [owen-delongs-macbook-pro:~] owen% host ipv6.comcast.com ipv6.comcast.com has address 68.87.64.59 ipv6.comcast.com has address 69.252.76.96 ipv6.comcast.com has IPv6 address 2001:558:1002:5:68:87:64:59 ipv6.comcast.com has IPv6 address 2001:558:1004:9:69:252:76:96 [owen-delongs-macbook-pro:~] owen% ping ipv6.comcast.com PING ipv6.comcast.com (68.87.64.59): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 Request timeout for icmp_seq 4 Request timeout for icmp_seq 5 ^C --- ipv6.comcast.com ping statistics --- 7 packets transmitted, 0 packets received, 100.0% packet loss [owen-delongs-macbook-pro:~] owen% ping 69.252.76.96 PING 69.252.76.96 (69.252.76.96): 56 data bytes Request timeout for icmp_seq 0 Request timeout for icmp_seq 1 Request timeout for icmp_seq 2 Request timeout for icmp_seq 3 ^C --- 69.252.76.96 ping statistics --- 5 packets transmitted, 0 packets received, 100.0% packet loss Owen On Mar 16, 2011, at 7:04 PM, Frank Bulk wrote:
I’ve been in contact with an internal Comcast contact, but it would be helpful if others could confirm or deny that web page loads of ipv6.comcast.com are slow (yes, you'll need IPv6 access to test -- and yes, I have native, non-tunneled access). I’ve measured load times of 1.5 to 2.5 minutes. There’s two AAAA records, so you many need to use wget to be aware of which one you're hitting.
The issue started around 3:10 pm Central. The other 10 IPv6 sites I monitor aren't having issues.
========================================= nagios:# wget ipv6.comcast.com --2011-03-16 16:57:02-- http://ipv6.comcast.com/ Resolving ipv6.comcast.com... 2001:558:1004:9:69:252:76:96, 2001:558:1002:5:68:87:64:59, 69.252.76.96, ... Connecting to ipv6.comcast.com|2001:558:1004:9:69:252:76:96|:80... connected. HTTP request sent, awaiting response... 301 Moved Permanently Location: http://ipv6.comcast.com/default.cspx [following] --2011-03-16 16:57:34-- http://ipv6.comcast.com/default.cspx Connecting to ipv6.comcast.com|2001:558:1004:9:69:252:76:96|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 32377 (32K) [text/html] Saving to: âindex.htmlâ
100%[======================================================================= ==================================>] 32,377 26.0K/s in 1.2s
2011-03-16 16:59:35 (26.0 KB/s) - âindex.htmlâ
nagios:# =========================================
========================================= nagios:# wget ipv6.comcast.com --2011-03-16 17:03:22-- http://ipv6.comcast.com/ Resolving ipv6.comcast.com... 2001:558:1002:5:68:87:64:59, 2001:558:1004:9:69:252:76:96, 69.252.76.96, ... Connecting to ipv6.comcast.com|2001:558:1002:5:68:87:64:59|:80... connected. HTTP request sent, awaiting response... 301 Moved Permanently Location: http://ipv6.comcast.com/default.cspx [following] --2011-03-16 17:05:05-- http://ipv6.comcast.com/default.cspx Connecting to ipv6.comcast.com|2001:558:1002:5:68:87:64:59|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 32377 (32K) [text/html] Saving to: âindex.html.1â
100%[======================================================================= ==================================>] 32,377 69.5K/s in 0.5s
2011-03-16 17:05:08 (69.5 KB/s) - âindex.html.1â
nagios:# =========================================
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