IPv6 Account Problem
I tried enabling/disabling Surf and it made no difference to me.
Still unable to access a lot of sites with IPv6
Still unable to access a lot of sites with IPv6
Quote from: AndyH Is it possible for one of the Plusnet network guys to look at my problem?
I can try...
I can ping your IP from our core upto a size of 1492
phughes@ptw-cr01-re0> ping 2a02:16c8:2000:xxxx:: size 1444
PING6(1492=40+8+1444 bytes) 2a02:16c8::a --> 2a02:16c8:2000:xxxx::
1452 bytes from 2a02:16c8:2000:xxxx:a6b1:e9ff:fe17:da16, icmp_seq=0 hlim=63 time=6.397 ms
phughes@ptw-cr01-re0> ping 2a02:16c8:2000:xxxx:: size 1445
PING6(1493=40+8+1445 bytes) 2a02:16c8::a --> 2a02:16c8:2000:xxxx::
^C
--- 2a02:16c8:2000:xxxx:: ping6 statistics ---
5 packets transmitted, 0 packets received, 100% packet loss
If you are running a PPPoE setup (like I am) you may need to lower your LAN side IPv6 MTU, mines set to 1400 just while I was testing but other have it a bit higher.
:ip rt6advd ifdetach intf LocalNetwork
:ip rt6advd ifconfig intf=LocalNetwork linkmtu=1492
:ip rt6advd ifattach intf LocalNetwork
:saveall
Other than that I can't see anything wrong with a quick glance and you've done most of the basic troubleshooting already (which helps
)
Hi Paul
Thanks for the response.
I'm running PPPoE - so I've changed the LAN MTU to 1400:
But still no go
This is what is happening:
Facebook is another one:
The strange thing is I can ping the sites like Facebook with ICMP and also on TCP Port 80:
It's almost like my browser is sending the requests, but nothing is coming back - but even that doesn't make a whole lot of sense because I am able ping the sites with TCP on Port 80. This is all very confusing
Edit: I should add that I can run the http://test-ipv6.com/ absolutely fine - I get 10/10 there. Even http://ipv6.google.com works fine. But some sites just refuse to load - I tried http://ipv6labs.cyberis.co.uk/logo.png as just a basic image with no scripts/html and even this will not load.
I have also tried various gateways - PCL/PTN/PTW to rule out that being a problem. I've even borrowed a neighbour's laptop to rule out all my equipment being at fault!
I was thinking whether it might be worth trying a PPP connection directly to the ONT but I am not sure if that will work with IPv6.
Thanks for the response.
I'm running PPPoE - so I've changed the LAN MTU to 1400:
Quote {admin}=>:ip iflist
Interface Group MTU RX TX Admin Oper
1 loop. . . . . . . . . . . . . . local 4096 32 MB 40 MB UP [UP]
2 Internet. . . . . . . . . . . . wan 1492 7675 MB 620 MB UP UP
3 LocalNetwork. . . . . . . . . . lan 1400 646 MB 7683 MB UP [UP]
4 Multicast . . . . . . . . . . . wan 1500 32 KB 35 KB UP UP
But still no go
This is what is happening:
Facebook is another one:
The strange thing is I can ping the sites like Facebook with ICMP and also on TCP Port 80:
Quote ~ Andrew$ ping6 2a03:2880:2110:df07:face:b00c::1
PING6(56=40+8+8 bytes) 2a02:16c8:2000:1100:91c7:b933:405f:5e37 --> 2a03:2880:2110:df07:face:b00c::1
16 bytes from 2a03:2880:2110:df07:face:b00c::1, icmp_seq=0 hlim=50 time=91.054 ms
16 bytes from 2a03:2880:2110:df07:face:b00c::1, icmp_seq=1 hlim=50 time=90.794 ms
16 bytes from 2a03:2880:2110:df07:face:b00c::1, icmp_seq=2 hlim=50 time=90.541 ms
Quote sh-3.2# nmap -6 -Pn --traceroute -p 80 facebook.com
Starting Nmap 6.40-2 ( http://nmap.org ) at 2014-04-01 12:32 BST
Nmap scan report for facebook.com (2a03:2880:2110:df07:face:b00c::1)
Host is up (0.089s latency).
rDNS record for 2a03:2880:2110:df07:face:b00c::1: edge-star6-shv-13-frc1.facebook.com
PORT STATE SERVICE
80/tcp open http
TRACEROUTE (using port 80/tcp)
HOP RTT ADDRESS
1 2.21 ms 2a02:16c8:2000:1100:a6b1:e9ff:fe17:da16
2 7.32 ms 2a02:16c8:0:1::19
3 6.91 ms 2a02:16c8:1:2::13
4 6.58 ms 2a02:16c8::b
5 6.23 ms lonap.he.net (2001:7f8:17::1b1b:1)
6 6.25 ms 10ge3-1.core1.lon2.he.net (2001:470:0:2cd::1)
7 71.90 ms 100ge1-1.core1.nyc4.he.net (2001:470:0:2cf::2)
8 77.06 ms 100ge5-1.core1.ash1.he.net (2001:470:0:299::1)
9 137.75 ms facebook-as32934.10gigabitethernet6.switch3.ash1.he.net (2001:470:0:1bf::2)
10 ... 11
12 120.55 ms ae88.dr02.frc1.tfbnw.net (2620:0:1cff:dead:beef::65b)
13 90.57 ms po1020.csw13b.frc1.tfbnw.net (2620:0:1cff:dead:beef::12b5)
14 ... 17
18 89.10 ms edge-star6-shv-13-frc1.facebook.com (2a03:2880:2110:df07:face:b00c::1)
It's almost like my browser is sending the requests, but nothing is coming back - but even that doesn't make a whole lot of sense because I am able ping the sites with TCP on Port 80. This is all very confusing
Edit: I should add that I can run the http://test-ipv6.com/ absolutely fine - I get 10/10 there. Even http://ipv6.google.com works fine. But some sites just refuse to load - I tried http://ipv6labs.cyberis.co.uk/logo.png as just a basic image with no scripts/html and even this will not load.
I have also tried various gateways - PCL/PTN/PTW to rule out that being a problem. I've even borrowed a neighbour's laptop to rule out all my equipment being at fault!
I was thinking whether it might be worth trying a PPP connection directly to the ONT but I am not sure if that will work with IPv6.
I've attached my wireshark. I can see my connection is starting with a lower MSS than yours and I get a lot more SYN and ACK packets before the actual GET request goes through.
I'm not sure if this helps/explains why some sites work and some don't mind you. I'd be interested to see if anyone else sees similar wiresharks to either you or me.
I'll have an ask about the team tomorrow see if anyone has any immediate ideas but it does seem like an odd one.
As far as I can tell the lesson here is....If its working leave well alone
I'm not sure if this helps/explains why some sites work and some don't mind you. I'd be interested to see if anyone else sees similar wiresharks to either you or me.
I'll have an ask about the team tomorrow see if anyone has any immediate ideas but it does seem like an odd one.
As far as I can tell the lesson here is....If its working leave well alone
If I try from a browser, I also get a lot more SYN/ACK packets - but I also get duplicates and retransmitted packets.
http://ipv6labs.cyberis.co.uk/logo.png should be a good one to try because it's a single HTTP request. There's also http://ipv4labs.cyberis.co.uk/logo.png to compare IPv4 vs IPv6.
This problem has totally baffled me
We know my trial account should be fine - another trialist has tested it and had no problems. I tried his trial account and the problem still occurred.
I would put money on this being down to whatever BT TSO did Thursday morning (I am going to try and prove this tomorrow). The fact that I tried a router firmware upgrade has to be coincidental as I've tried a different router that has never been used before.
This is indeed a lesson of leave it alone or it will break
http://ipv6labs.cyberis.co.uk/logo.png should be a good one to try because it's a single HTTP request. There's also http://ipv4labs.cyberis.co.uk/logo.png to compare IPv4 vs IPv6.
This problem has totally baffled me
We know my trial account should be fine - another trialist has tested it and had no problems. I tried his trial account and the problem still occurred.
I would put money on this being down to whatever BT TSO did Thursday morning (I am going to try and prove this tomorrow). The fact that I tried a router firmware upgrade has to be coincidental as I've tried a different router that has never been used before.
This is indeed a lesson of leave it alone or it will break