Changes

== IPv6 DEBUG ==

== IPv6 DEBUG ==

These suggestions are '''''only''''' related to issues that might be encountered when accessing my [http://ipv6.chappell-family.com/ipv6tcptest/ IPv6 firewall tester.] For general IPv6 debug please see:

Debug suggestions related to IPv6 configuration issues that might be encountered when accessing the [https://ipv6.chappell-family.com/ipv6tcptest/ IPscan IPv6 firewall tester.]

 

For general IPv6 debug please see:

 

* [http://www.getipv6.info/index.php/Troubleshoot_IPv6_Issues Arin IPv6 debug - many useful links]

* [http://www.getipv6.info/index.php/Troubleshoot_IPv6_Issues Arin IPv6 debug - many useful links]

* [http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/index.html Linux IPv6 HOWTO]  

* [http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/index.html Linux IPv6 HOWTO]  

=== General IPv6 Connectivity ===

=== General IPv6 Connectivity ===

First check your general IPv6 connectivity. At a command prompt or terminal check that your machine has a global unicast IPv6 address allocated (i.e. 2000::/3, so begins either 2XXX or 3XXX) as shown in these examples:

First check your general IPv6 connectivity. At a command prompt or terminal check that your machine has a global unicast IPv6 address allocated (i.e. 2000::/3, so begins either 2XXX or 3XXX) as shown in these examples:

    

    

Based on the fact that must have already accessed my server using IPv4, in order to be reading this, then the following IPv4 A-record lookup should work:

Based on the fact that must have already accessed the IPscan domain using IPv4, in order to be reading this, then the following IPv4 A-record lookup should work:

   Non-authoritative answer:

   Non-authoritative answer:

   Name:  ipv6.chappell-family.com

   Name:  ipv6.chappell-family.com

   Address: 212.159.122.74

   Address: B.C.D.E

=== DNS Resolver Issues ===

=== DNS Resolver Issues ===

Some DNS services don't seem to reliably resolve AAAA lookups. In particular, some appear to resolve A and AAAA records with different delays, and/or reliability, which sometimes causes web browsers to determine that only an IPv4 address exists since the IPv6 lookup resolves too slowly/unreliably. You can try one of the publicly accessible DNS resolvers as an alternative to your current providers' if you believe that this might be the case. For those using a tunneled IPv6 connection then it is likely that your tunnel provider also offers a DNS resolver:

Some DNS services don't seem to reliably resolve AAAA lookups. In particular, some appear to resolve A and AAAA records with different delays, and/or reliability, which sometimes causes web-browsers to determine that only an IPv4 address exists since the IPv6 lookup resolves too slowly/unreliably. You can try one of the publicly accessible DNS resolvers as an alternative to your current providers' if you believe that this might be the case. For those using a tunneled IPv6 connection then it is likely that your tunnel provider also offers a DNS resolver:

* Hurricane Electric - see Available DNS resolvers section of your tunnel setup (may be 2001:470:20::2 and 74.82.42.42)

* Hurricane Electric - see Available DNS resolvers section of your tunnel setup (may be 2001:470:20::2 and 74.82.42.42)

* [https://developers.google.com/speed/public-dns/docs/using Google DNS Servers]

* [https://developers.google.com/speed/public-dns/docs/using Google DNS Servers]

* [http://www.opendns.com/technology/ipv6/ OpenDNS IPv6 trial]

* [https://support.opendns.com/hc/en-us/articles/227986667-Does-OpenDNS-Support-IPv6- OpenDNS IPv6]

www6.ipv6.chappell-family.com has a single AAAA DNS record:

www6.ipv6.chappell-family.co.uk has a single AAAA DNS record:

   nslookup www6.ipv6.chappell-family.com

   nslookup www6.ipv6.chappell-family.co.uk

      

      

   Server:  server.example.com

   Server:  server.example.com

   Address:  192.168.33.1

   Address:  192.168.33.1

    

    

   Name:    www6.ipv6.chappell-family.com

   Name:    www6.ipv6.chappell-family.co.uk

   Address:  2001:470:1f08:185c::2

   Address:  2001:470:1f08:185c::2

Assuming these work correctly then a ping should also resolve:

Assuming these work correctly then a ping should also resolve:

   ping www6.ipv6.chappell-family.com

   ping www6.ipv6.chappell-family.co.uk

    

    

   Pinging www6.ipv6.chappell-family.com [2001:470:1f08:185c::2] with 32 bytes of data:

   Pinging www6.ipv6.chappell-family.co.uk [2001:470:1f08:185c::2] with 32 bytes of data:

   Reply from 2001:470:1f08:185c::2: time<1ms

   Reply from 2001:470:1f08:185c::2: time<1ms

   Reply from 2001:470:1f08:185c::2: time<1ms

   Reply from 2001:470:1f08:185c::2: time<1ms

* [http://ipv6.google.com Google's IPv6-only-URL]

* [http://ipv6.google.com Google's IPv6-only-URL]

* [http://www6.ipv6.chappell-family.com/ipv6tcptest/ My IPv6-only-URL]

* [http://www6.chappell-family.co.uk/ An IPv6-only-URL]

Accept the warning about dragons, and then in the filter bar enter:

Accept the warning about dragons, and then in the filter bar enter:

   ipv6

   ipv6

The resulting list should now show an entry:

The resulting list should now show an entry:

    

    

   network.dns.disableIPv6

   network.dns.disableIPv6

If this entry is set to '''true''' then double click on the entry to change its sense to '''FALSE'''. Then try again!

If this entry is set to '''true''' then double click on the entry to change its sense to '''FALSE'''. Then try again!

=== IPv6-only URL Test ===

=== IPv6-only URL Test ===

and finally pointing your web browser towards my [http://www6.ipv6.chappell-family.com/ipv6tcptest/ IPv6-only port scanner] should also work.

and finally pointing your web browser towards the [http://www64.chappell-family.co.uk/cgi-bin6/ipscanjs.cgi IPv6-only Raspberry Pi Powered port scanner] should also work.