IPv6 RA vs DHCPv6 - The chosen one?

Michael Sinatra michael at rancid.berkeley.edu
Fri Dec 23 18:48:00 UTC 2011

On 12/22/11 16:16, Masataka Ohta wrote:
> Glen Kent wrote:
>> While in some environments, typically with small number of devices,
>> its indispensable. Small businesses may not want the complexity of
>> setting up a central server (for DHCP) - SLAAC works very well in such
>> environments.
> IPv6 routers are the central servers for SLAAC with the
> complexity of setting up.

I have never found an IPv6 router--with SLAAC enabled--any harder or
more complex to configure than an IPv4 router.  You need to route IPv6

The only time you need to perform extra steps is when you want to run
DHCPv6.  You need to enable the M and/or O flags and turn off the
'autonomous' flag (if you don't want a host to get both SLAAC addresses
and DHCPv6 addresses.  Then you need to turn on relaying unless you are
putting the DHCPv6 server on the same wire.

We need to make it easier to run DHCPv6, not harder to run SLAAC.


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