Subj : binkd completed...
To   : Michiel van der Vlist
From : Markus Reschke
Date : Thu Jan 08 2015 13:49:10

Hi Michiel!

Jan 08 12:13 2015, Michiel van der Vlist wrote to Bill McGarrity:

 MvdV> With IPv6 you get a RANGE of addresses. Large enough to give every 
 MvdV> device on your LAN its own globally routable IPv6 address. The 
 MvdV> first 64 bits of the range is called the prefix. Actually the range 
 MvdV> is larger than that, but we will ignore that for the moment. The 
 MvdV> ISP communicates the range to the customer's router by prefix 
 MvdV> delegation.

Actually the user gets two prefixes, one for the WAN connection (mostly a /64) and one for the LAN (/48, /56 or just a /64).

 MvdV> Dynamic addresses were used with IPv4 to conserve addresses. An IP 
 MvdV> adrees could be assigned to another user when the previous one 
 MvdV> logged out. This made sense in the age of dial up IP. It does not 
 MvdV> make sense with IPv6 with (semi) permanent connections and no 
 MvdV> shortage of addresses.

Let's say, it's not necessary for technical reasons. But if you take privacy issues into account things change ;)

 BM>> Normally I never lose my IPv4 address as well unless I'm disconnected
 BM>> from Comcast for 30+ minutes or so.

 MvdV> My IPv4 address is also dynamic in theory. In practise it is 
 MvdV> static. I do not know how long I have to disconnect to lose it, but 
 MvdV> it is longer than a day.

My provider assigns a new IPv4 address when re-connecting. But there seems to be a time window for the IPv6 LAN prefix. In theory I should get new addresses every 6 months, if there would be no outages or maintenance windows :)

 BM>> Either way I'm learning... :)

 MvdV> We all are. ;-)

Very true!

ciao,
Markus

--- 
 * Origin: *** theca tabellaria *** (2:240/1661)

.