[168618] in North American Network Operators' Group
Re: Question on DHCPv6 address assignment
daemon@ATHENA.MIT.EDU (Owen DeLong)
Fri Jan 31 18:13:06 2014
From: Owen DeLong <owen@delong.com>
In-Reply-To: <52EC0A5A.9060605@gont.com.ar>
Date: Fri, 31 Jan 2014 15:07:10 -0800
To: Fernando Gont <fernando@gont.com.ar>
Cc: NANOG <nanog@nanog.org>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
On Jan 31, 2014, at 12:40 PM, Fernando Gont <fernando@gont.com.ar> =
wrote:
> Folks,
>=20
> I'm wondering about the following two aspects of different DHCPv6
> implementations out there:
>=20
> 1) What's the pattern with which addresses are generated/assigned? Are
> they sequential (fc00::1, fc00::2, etc.)? Random? Something else?
>=20
Depends on your DHCPv6 server implementation. I believe ISC defaults to =
random. I=92m not sure if that=92s configurable or not.
> 2) What about their stability? Is there any intent/mechanism for them =
to
> be as "stable" as possible? Or is it usual for hosts to get a new
> address for each lease?
I believe they are generally stable in that once a DUID is associated =
with an address, that association is persistent, but that may also be =
implementation dependent.
>=20
> P.S.: I understand this is likely to vary from one implementation to
> another... so please describe which implementation/version you're
> referring to.
I have limited experience with the ISC DHCPv6 server. Mostly I just use =
SLAAC.
Owen
