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ITidiots 72: IPv6 Essentials

Well I am sure you have heard that we are running out of IPv4 addresses. Now I, like no doubt some of you, have been hearing this for around 15 years, in fact ever since I learnt TCP/IP I knew it was doomed. In this episode we introduce IPv6 concepts and cover the basics of the new IPv6 address format. Oh, and sorry for the sound quality on this one, the batteries in our microphone ran out, and Mark was suffering from man flu!


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Reader Comments (25)

Could you provide PPT? :D

December 22, 2009 | Unregistered Commenterbbahes

I found that interesting from an IPv4 point of view and it answered my question about IPv5... but what about IPv1,2,3 and what would the next big thing be?

Also, IPv6 was a little confusing in this video, any little pointers to either guides on the internet or youtube (or any other generic free video sharing site) videos?

Other than that, great to have you back guys!!

Edit: Next time, put SuFay on the camera as well...

December 22, 2009 | Registered CommenterJamie

forget Pv1,2,3 and 5 theres no point going down that road.

"what would the next big thing be?"

getting IPv6 out there first! .. getting everyone to agree to use it , including countries ... IPv6 isn't that new !!!

"(or any other generic free video sharing site) videos?"

best one I have seen is the one from the google conference that i posted here. (ill find it for you)

I would also point that MS have their MS'ified Pv6 standards, it may be slightly different on other platforms e.g. number of IPv6 addresses each client has for one. There's also tech such as DHCPv6 which still allows admins to statefully assign addresses if they wish instead of auto-configuration, in fact cisco backs this. In fact many IPv4 services have been updated for IPv6.

There are also problems that still need addressing, such as p2p and streaming style services which may have to use a more expensive client server models.

December 23, 2009 | Registered CommenterSupernova

for Jamie and others

Google IPv6 Conference 2008: IPv6 on Windows (January, 29 2008)
Speaker: David Holder, Erion


December 23, 2009 | Registered CommenterSupernova

It is all well and good, more addresses, (I guess) more security and less work having to program in addresses as they work on their own... but what happens when (for example) I want to access a remote server (e.g. a private web hosting one) or say, my home router? I would have to type in a huge long address and try and remember it, is there anyway of "masking" an IPv6 address as an IPv4 one?

December 23, 2009 | Registered CommenterJamie

All devices will probably have a simple address as a factory defualt to configure eg ::1

Also IPv6 has LLMNR (link local multicast name resolution) which allows you to give devices friendly names its like a peer to peer version of DNS/host file.

So if your IPv6 router has LLMNR, you could login set its name as "router" and local all devices will atomatically be able to resolve its name "router".

Stuff on internet and large networks will still use DNS

"Pv6 address as an IPv4 one"

There a few ways to gateway IPv4 and IPv6 as yet there is no offical standard.
A special version of NAT is one option.

MS as has special addresses which are made from IPv4 and IPv6, however, i belive this is for support on local networks where programs use IPv4 via MS apis and dont use IPv6 yet

December 23, 2009 | Registered CommenterSupernova

""""" its call embeding i belive

eg = 0:0:0:0:0:FFFF:

I belive the way MS have done it you'll have double stack and your IPv4 address will be made into yet another IPv6 IP like the one above. This is IPv4 over IPv6

Like i said ipv6 over ip4 you could use a gatway or use tunnel between sites or devices over ipv4 (this is how most brokers work effectively its a tunnel to a large sperate IPv6 network joining everyone together, this is the way it have to be on the net until everyone moves over to fill the voids)

December 23, 2009 | Registered CommenterSupernova

nice, that last post of yours just helped a lot... thanks!

I guess IPv6 will take off now a bit like 64bit at home...

December 23, 2009 | Registered CommenterJamie

Any reason why this never hit iTunes?

January 8, 2010 | Unregistered CommenterTimbo

It is just in the lower resolution podcast, subscribe to Itidiots (mp4/ipod)

January 8, 2010 | Registered CommenterSupernova

Yep, for some reason, even though the other (SAN episode) was recorded using the same video equipment (that has HD and mp4 versions) the IPv6 one doesn't have a HD episode... (Dave?)

Still, it is still good quality for an mp4, ipod podcast

January 10, 2010 | Registered CommenterJamie

anyone know any other podcasts, i think itidiots has pretty much had it for the time being.

January 10, 2010 | Registered CommenterSupernova

not any more video ones like this. There are of course the ones with big americans talking out the back of their a*ses for two hours with adverts every five minutes.

Best of YouTube, Gadget TV, HowCast, to name a few good ones...

January 11, 2010 | Registered CommenterJamie

if it was more of a community then there would be new content between episodes.
I would love to help, i have lots of ideas, but i get the impression that they don't want it.

January 12, 2010 | Registered CommenterSupernova

Jamie, you are evidence that Americans don't have the corner on the market on talking out of their a*sses. Very rude! Grow up!

January 13, 2010 | Registered CommenterGreg Fyn

Yes it was rude of Jamie "the thread killer" ;-)

cough...sod off jam.. cough

January 13, 2010 | Registered CommenterSupernova

lol, well I can't stand some of them... and I think I was in a bit of a mood that day (won't go into it, thought it was technical) and I did censor it (sort of)...

I would be more than happy to either:
a.) Go on Unwatchable (skype does work on my laptop, and now my PC)
b.) Create content for the site...

January 14, 2010 | Registered CommenterJamie


c.) leave itidiots.com ?

January 14, 2010 | Registered CommenterSupernova
IP6 looks confusing. How are we going to remember those IPs?

My machines at home I've given static IPs too. So they go

and so on. I can RDP to them via or their name DC1

How will this work in IP6? I'm a bit like Nicky. Although I don't know IP4 half as much as he does, I probably only know a tiny part of IP4. But feel moving to IP6 just seems so different it gives me a headache and I feel totally lost again :(

Thought I understood the basics of troubleshooting IP4 but now IP6 looks complicated.

Relating to this, check this out :)

April 17, 2010 | Unregistered CommenterJoeypesci

Don't get too hung up on the actual IP address, DNS will be doing the heavy lifting. Nobody can remember let alone accurately type IPv6 addresses consistently so properly configured DNS will be king! You can RDP by name.
April 18, 2010 | Registered CommenterGreg Fyn
But it all seems so different. For example, at the NHS where I work, you'd go to a machine that was messing about and check it's PC name. If you couldn't connect by that NAX code (the name of the PC) you'd ping the machine to get it's IP and try that instead. If that worked, you knew there were issues with DNS.

I like how it was, I don't want it to change :( :)

But if Nicky is right in saying that people are commenting it would stop the big media companies monitoring your p2p traffic, then they won't like that will they. But never mind, VPN will stop them just as well :)
April 18, 2010 | Unregistered CommenterJoeypesci
When IPv4 was designed most of networks had just few nodes, low bandwidth, high latency, and high error rates.
April 20, 2010 | Unregistered CommenterJulius
> "When IPv4 was designed most of networks had just few nodes, low bandwidth, high latency, and high error rates."

Actually IPv4 was in use before the standard was officially released so to speak and which probably stumped its features. At the Google IPv6 Conference in 2008 members of the original IPv4 team stated that 32bit addressing was only chosen for prototyping and research, and that they were actually looking at much larger addressing and even variable length addressing for the final IPv4 standard. So they didn't expect people to start using it in a production environments like they did at that stage of development.

IPv6 has been around for well over 20 years! even Microsoft released stacks and development code as early as 1998. Standardising is the lengthy process.
April 25, 2010 | Registered CommenterSupernova
The first IPv6 standard was released in 1998, however, as you can see from the Google IPv6 Conference in 2008 there is still some argument on how to implement it and refine it.
April 25, 2010 | Registered CommenterSupernova
thank you.

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May 12, 2010 | Unregistered Commentergame online

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