[mdlug] IPv6 - for MDLUG Group

[Michael Mol]

Apologies to those only on the discuss@ list; I didn't subscribe to that
one, so I don't think I can send to it yet.

What I hope/would like to do is follow this format:
1) Set up a local network such that those with sufficient knowledge
already can connect and pursue poking it on their own.

2) While those folks are pursuing and poking the connectivity and their
devices' support, I can talk more about theory.

I expect to touch on a wide range of topics, and at each step, I'll try
to find out how familiar people already are with the specifics, and skip
anything that'll be redundant for those present. I'll be happy to follow
up in-person or on the discuss@ list for anything left unclear to some
folks.

Off the top of my head, I think the sequence will look like:
1) OSI layers. Briefly, talking about the data link, network and
transport layers. Just enough to be able to point to where IPv4 and IPv6
sit on them, and to be able to reference how IPv4 and IPv6 interact with
them later. MAC addresses are going to be the most significant piece, here.

2) IP and ICMP. What an IP address is, how the address space is
distributed (CIDR), how IP addresses are obtained (ARP, DHCP), and how
routing works. Touch on IPv4 first, contrast with IPv6. (Notably, RAs
may replace or complement DHCP, and ARP is dropped in favor of neighbor
discovery)

At this point, we might talk about a few different things, depending on
where interest lies.

* Connectivity options. Native IPv6 and transition mechanisms, including
proxies, tunnels, Teredo and 6to4.
* Dual stack. You don't have to use just IPv4 or just IPv6; you can (and
probably should) use both at the same time.
* DNS. What DNS is and does, and how it differs between IPv4 and IPv6.
(Mostly, A vs AAAA records, and the format of PTR records)
* Software and hardware compatibility. Some hardware won't work. Some
software is buggy. Some software will never work.
* Protocol compatibility. Protocols which are aware of network addresses
(particularly, brokered peer-to-peer protocols such as SIP and
bittorrent) face additional hurdles.

gib at juno.com wrote:
> This sounds like an interesting topic.  Please be aware that we will have people there of varying knowledge levels. Hopefully we will be able to broadcast this on out Big Blue button channel. Please see our web site for more details http://www.mdlug.org  We've been experimenting with a web cast so we may ry that again. Our meeting is the second Saturday of each month (so that's 1/14).  I'll pass this on to some other groups. My apologizes to everyone who gets this multiple times.  I'm working off of several lists.  I suspect this type of event could be duplicated in Penguicon.org and TecShop.ws - as well as local group events such as i3Detroit, Wash Lug . . .
> 
> ---------- Original Message ----------
> From: Michael Mol <mikemol at gmail.com>
> To: Stan at mcomputersolutions.com,  "MDLUG's Main discussion list" <mdlug at mdlug.org>
> Subject: Re: [mdlug] IPv6
> Date: Fri, 6 Jan 2012 00:12:44 -0500
> 
> My Internet connection through Comcast also doesn't include IPv6,
> though my modem supports it; Comcast hasn't rolled out IPv6 in my area
> yet. So I use tunnelbroker.net, which is a free tunnel service offered
> by Hurricane Electric. They only require that you have a public IPv4
> address; it doesn't have to be static, but you do need to reconfigure
> their end of things if your public IPv4 address changes. This is
> scriptable.
> 
> I can also talk about the difference between radvd/RAs, which don't
> include nameserver information, and DHCPv6, which can. My own setup
> has nameserver details distributed via IPv4 DHCP.
> 
> On Thu, Jan 5, 2012 at 11:26 PM, Stan Green <Stan at mcomputersolutions.com> wrote:
>> My AT&T DSL modem does not work 100% with IPv6. It cannot provide DNS entries
>> for DHCP. I have to hard code the DNS for Debain 6+. It is not a big deal, so I
>> have not contacted AT&T.
>>
>> Regards,
>> Stan
>> On Thursday 05 January 2012 09:29:50 pm Michael Mol wrote:
>>> I'll be coming by next week to do a presentation on IPv6. I dug
>>> through the MDLUG's mailing list archives to see if there had been any
>>> prior discussion on-list about the topic, but I don't see any. So I
>>> thought I'd ask for those who plan to be at the meeting:
>>>
>>> * What experiences do you already have with IPv6?
>>> * What questions do you have regarding IPv6?
>>> * What kinds of networked hardware and operating systems do you use?
>>>
>>> In my presentation, I plan on bringing my laptop with me. Presuming I
>>> can get Internet access, I'll set my laptop as an IPv6 router, and set
>>> up a local network which you can connect to; the network will have
>>> both IPv4 and IPv6 connectivity, and you should be able to quickly
>>> find out how well your portable hardware works over IPv6.
>>
>>
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> 
> 
>