It looks like ddclient needs a patch in order to support IPv6...
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=704467
Click on link to attachment.
Have not tried it yet, but I probably will. Kind of surprising that
ddclient does not support it yet, this patch was offered up years ago.
David
On Sat, Feb 6, 2016 at 2:28 PM, David Kerr <da...@kerr.net> wrote:
> Thanks Lonnie, my tests are returning success and I'm beginning to figure
> things out. Discovered that VMware Fusion supports IPv6 only for bridged
> connections, not NAT, which is fine by me.
>
> Interestingly if I "ping google.com" from the AstLinux box it is routed
> to google's IPv6 address, but if I ping from an inside client than it is
> routed to the IPv4 address -- then I discovered the "ping6" command which
> does force IPv6 and it worked.
>
> Xfinity's speedtest was interesting too. Shows that IPv6 is slightly
> slower than IPv4. Possibly because of larger packet headers?
>
> I do think it would be helpful to see the assigned IPv6 address on the web
> interface status page both the EXTIF and the network part (first 64 bits)
> of the INTIF. Its interesting that the network part of EXTIF
> (2001:aaaa:bbbb:cccc) is not the same as the network part of INTIF
> (2601:xxxx:yyyy:zzzz) for some reason I thought they would be the same.
>
> Now, how should IPv6 work on my internal network? Specifically DNS.
> If I "ping Davids-iPad" then it works (DHCP assigned IPv4 address, name
> set on my iPad).
> But if I "ping6 Davids-iPad" then...
> ping6: getaddrinfo -- nodename nor servname provided, or not known
> But if I "ping6 2601:xxxx:yyyy:zzzz:oh you get the idea" (address found
> from test-ip6.com)
> Then it works.
>
> So how do I make my IPv6 addresses discoverable by DNS? Some more reading
> to do I think.
>
> Thanks
> David
>
>
>
>
>
> On Sat, Feb 6, 2016 at 8:31 AM, Lonnie Abelbeck <li...@lonnie.abelbeck.com
> > wrote:
>
>> Hi David,
>>
>> Excellent.
>>
>> This is the obligatory IPv6 test site, you should get 10/10 from any HTTP
>> browser if it supports IPv6 ...
>> http://test-ipv6.com
>>
>> Speed test site that does both IPv4 and IPv6 (requires flash, so use
>> Chrome)
>> http://speedtest.xfinity.com/
>>
>> The Status tab does not show any IPv6 info in the top section, not sure
>> if that would be helpful.
>>
>> Looks like you are in business. Here is a nice overview of IPv6...
>>
>> IPv6 Basics
>>
>> http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucm/srnd/ipv6/ipv6srnd/basics.pdf
>>
>> BTW, personally I prefer "ip a" instead of "ifconfig".
>>
>> Lonnie
>>
>>
>> On Feb 5, 2016, at 10:35 PM, David Kerr <da...@kerr.net> wrote:
>>
>> > Okay, got some learning to do. I've rebooted with IPv6 enabled. My
>> iMac is now assigned an IPv6 address, interestingly it seems to have been
>> assigned two addresses (on the wired ethernet, I have WiFi turned off). As
>> for the AstLinux box, status page is not showing my assigned IPv6 address,
>> only my IPv4 address. Firewall states however shows quite a few v6
>> addresses in lieu of the v4 address and the system log is showing that the
>> firewall is blocking some v6 traffic.
>> >
>> > Meanwhile at the command line, output from ifconfig shows...
>> > eth0 assigned two IPv6 addresses, one marked /128 Scope:Global the
>> other /64 Scope:Link
>> > br1 (eth1/eth2 bridged) also assigned two IPv6 addresses, one marked
>> /64 Scope:Global the other /64 Scope:Link
>> > eth1 and eth2 both have one IPv6 address, both /64 Scope:Link
>> > eth1's IPv6 address is identical to one of the br1 interface's IPv6
>> address
>> > lo interface has ::1/128 Scope:Host which I assume is the v6 equivalent
>> to 127.0.0.1
>> >
>> > So I think I'm in business. Now to start reading up on IPv6.
>> >
>> > Should the web interface status page be updated to display the IPv6
>> addresses of EXTIF and INTIF ?
>> >
>> > David.
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > On Fri, Feb 5, 2016 at 9:26 AM, Lonnie Abelbeck <
>> li...@lonnie.abelbeck.com> wrote:
>> > David,
>> >
>> > With DHCPv6 and "Prefix Delegation" you leave the "IPv6/nn:" filed
>> blank (actually, it will be ignored). "IPv6/nn:" is only used for static
>> addressing.
>> >
>> > There is a lot to learn about IPv6, not rocket science, but a lot of
>> details that any self-respecting geek should know. :-)
>> >
>> > Lonnie
>> >
>> >
>> > On Feb 5, 2016, at 8:10 AM, David Kerr <da...@kerr.net> wrote:
>> >
>> > > Okay, cool. Something to play with over the weekend. For IP
>> Autoconfig on the internal LANs.... do I leave the field after it blank, or
>> do I have to enter something akin to IPv4's 192.168.x.y ? Forgive me is
>> that is a dumb question, but I am not at all familiar with IPv6 yet.
>> > >
>> > > Thanks
>> > > David
>> > >
>> > > On Fri, Feb 5, 2016 at 9:00 AM, Lonnie Abelbeck <
>> li...@lonnie.abelbeck.com> wrote:
>> > > Hi David,
>> > >
>> > > We recently added DHCPv6 client support (which Comcast requires), so
>> if you built an image recently you should have it:
>> > >
>> > > *If* you wanted to enable IPv6:
>> > > --
>> > > Network tab -> IP Version: [ IPv4 & IPv6 ]
>> > >
>> > > Network tab -> Connection Type: [ DHCP/DHCPv6 ]
>> > >
>> > > Network tab -> Internal Interfaces: -> IPv6 Autoconfig: [ enabled ]
>> for any internal LAN that you want IPv6 Enabled using "Prefix Delegation"
>> > >
>> > > Network tab -> External DHCPv6 Client Settings: (the defaults should
>> be fine)
>> > > --
>> > >
>> > > > Which now begs the question whether I should enable it on my
>> AstLinux box which is what is ordinarily connected to the cable modem. If
>> I do enable it, what affect does it have.... will systems on my local LAN
>> be issued IPv6 addresses as well as IPv4? Are there any security or
>> firewall implications? Is there any benefit?
>> > >
>> > >
>> > > Do you need IPv6 enabled now ? most likely no.
>> > >
>> > > Will enabling IPv6 have any security or firewall implications ? most
>> likely no, a lot of effort has been made to make dual-stack IPv4/IPv6
>> seamless. But never say never.
>> > >
>> > > Should you enable it ? your call, but I would think you do, if not
>> only to learn about IPv6. Worst case the "Network tab -> IP Version:"
>> master switch can disable IPv6 if needed.
>> > >
>> > > Personally, I have had IPv6 enabled for well over 5 years using
>> Hurricane Electric's https://www.tunnelbroker.net . Looking forward to
>> getting "native" IPv6 support from my ISP some day.
>> > >
>> > > One thing to remember is IPv6 is 'routed' so you are protected by
>> iptables's stateful inspection and not by NAT. You don't port-forward to
>> internal devices, but rather you selectively route IPv6 to internal devices.
>> > >
>> > > If you currently have firewall rules limiting kids "screen time" make
>> sure they are not IPv4-only rules. The time-schedule-host-block plugin
>> should also work with IPv6. Most all modern devices today will try to
>> support IPv6 if available.
>> > >
>> > > Lonnie
>> > >
>> > >
>> > > On Feb 4, 2016, at 9:13 PM, David Kerr <da...@kerr.net> wrote:
>> > >
>> > > > Yesterday I connected my MacBook directly to my cable modem as I
>> was testing whether AstLinux impacted speedtest results having just been
>> upgraded to Comcast higher speed service -- answer no, or if it does it is
>> negligible.
>> > > >
>> > > > However I happened to notice in Network Settings that in addition
>> to the regular IPv4 address, DHCP had also returned a IPv6 address. This
>> is the first time I have noticed this and I suppose it means that Comcast
>> now supports IPv6
>> > > >
>> > > > Which now begs the question whether I should enable it on my
>> AstLinux box which is what is ordinarily connected to the cable modem. If
>> I do enable it, what affect does it have.... will systems on my local LAN
>> be issued IPv6 addresses as well as IPv4? Are there any security or
>> firewall implications? Is there any benefit?
>> > > >
>> > > > Anyone done this and/or have advice?
>> > > >
>> > > > Thanks
>> > > > David
>>
>>
>>
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