nanog mailing list archives

RE: SLAAC(autoconfig) vs DHCPv6


From: "TJ" <trejrco () gmail com>
Date: Mon, 18 Aug 2008 16:34:01 -0400

-----Original Message-----
From: Scott Weeks [mailto:surfer () mauigateway com]
Sent: Monday, August 18, 2008 3:34 PM
To: nanog () nanog org
Subject: SLAAC(autoconfig) vs DHCPv6



---------- trejrco () gmail com wrote: ------------
From: "TJ" <trejrco () gmail com>

As a general rule, most clients are following the "If we gave them static
IPv4 addresses we will give them static IPv6 addresses" (infrastructure,
servers, etc).  The whole SLAAC(autoconfig) vs DHCPv6 is a separate (albeit
related) conversation ...
----------------------------------------------------


I'm still an IPv6 wussie and would like to learn more before moving forward,
so would anyone care to share info on experiences with this decision?

Which one?
"If we gave them static IPv4 addresses we will give them static IPv6 addresses"
Or
"SLAAC(autoconfig) vs DHCPv6"

For the first ... at the simplest, it is familiar and comfortable.
In general:
        Servers, Routers, Firewalls, Switches (atleast those with L3 addresses) == static address
        Hosts == dynamic ... either SLAAC or DHCPv6.  Manual Configuration of hosts is a non-starter for most 
environments.

For the latter ... that gets more involved.
Many (most?) platforms do not support DHCPv6 client functionality.  Ditto on the server side.
OTOH, SLAAC alone cannot currently give you DNS information ... a possible deal-breaker, that.
(Some work under way to change that, or the environment can cheat 0 rely on IPv4 transport for DNS :)  )



scott


HTH!
/TJ



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