[SATLUG] Maybe- OT... The future and IPv6

Aaron Hackney aaron at aaronhackney.com
Mon Dec 3 19:20:24 CST 2007


Correct. The MAC address only effects the last 64 bits of the 128 bit 
address which is the "host portion".  A 48 bit mac padded with FFFE to 
create the modified EUI-64 64 bit host identifier.

-A

Henry Pugsley wrote:
> You still have network boundaries like in IPv4, except they are a lot larger
> (small allocation is a /48?).  You would only have to worry about duplicates
> within the network block, and that should not be too hard if there is a
> unique seed for each IP address.  This may be similar to how VMware
> generates hardware addresses for virtual NICs based on a real physical
> address without causing collisions.
>
> -Henry
>
> On Dec 3, 2007 5:41 PM, Hector Bojorquez <hector.bojorquez at gmail.com> wrote:
>
>   
>> wow... that's really interesting.
>> short lived IPv6 address?
>> How short lived would that be-- and then does that mean that--
>> theoretically-- that IPs could get duplicated.
>> A random seed doesn't guarantee that an IP adress couldn't be duplicated--
>> Person A in Mexico could get an IP and then someone in china could also
>> get
>> the same one (theoretically... chances are small seeing the nature or
>> random
>> seeds, MAC addresses and the large number of IPs available).
>>
>> This is really interesting (or I'm a great big dork) but how are networks
>> going to be defined with IPv6
>> Will Company A just buy a range of IPs?
>>
>> Where do I learn?!!
>> IP6!!!
>>
>> "So, the way I read this, is that using an algoithm and the MAC of a nic
>> as a seed, a unique, short-lived IPv6 address is created without the
>> actual MAC address embedded in the IPv6 Address."
>>
>> On Dec 3, 2007 4:55 PM, Aaron Hackney <aaron at aaronhackney.com> wrote:
>>
>>     
>>> Oh ya, it was in the RFC - RFC 3041. I am very green in the IPv6 arena
>>> myself and just coming up to speed on it...
>>> -A
>>>
>>>
>>> Hector Bojorquez wrote:
>>>       
>>>> Just a question...
>>>>
>>>> Do you think eventual implementation of IPv6 will be a privacy killer
>>>>         
>> on
>>     
>>> the
>>>       
>>>> Internet?
>>>>
>>>> I don't know enough about it but it strikes me that we could head doen
>>>>         
>>> the
>>>       
>>>> path of having folks having IPs issued almost as licenses.
>>>>
>>>> I see good things and bad things ... but I may not understand it
>>>>         
>> enough
>>     
>>>> any thoughts?
>>>>
>>>>         
>>>  --
>>> _______________________________________________
>>> SATLUG mailing list
>>> SATLUG at satlug.org
>>> http://alamo.satlug.org/mailman/listinfo/satlug to unsubscribe
>>> Powered by Rackspace (www.rackspace.com)
>>>
>>>       
>> --
>> _______________________________________________
>> SATLUG mailing list
>> SATLUG at satlug.org
>> http://alamo.satlug.org/mailman/listinfo/satlug to unsubscribe
>> Powered by Rackspace (www.rackspace.com)
>>
>>     
>
>
>
>   


More information about the SATLUG mailing list