How are you doing DHCPv6 ?

Mark Andrews marka at isc.org
Mon Jan 23 16:05:02 CST 2012


In message <CALFTrnMXzdoS=-B=WT1hVfgKVDrQZDZ8KonhOpgU1JoqxO9j5A at mail.gmail.com>
, Ray Soucy writes:
> This is a problem that would be nice for ISC to resolve (or another
> dependable FOSS implementation).
> 
> For a while now (about 20 years I believe) we've used ISC DHCPd in a
> distributed model for our public IPv4 space.  In a nutshell, each DHCP
> server is configured only with static assignments, their log files are
> monitored (simple event correlator), and scripts are fired off to
> perform tasks like new assignments against a centralized database
> (MySQL).  The database is responsible for keeping track of address
> assignments centrally and is used to generate configuration files for
> DHCPd.  Dynamic updates are made using OMAPI.
> 
> Unfortunately, the ISC DHCPv6 implementation makes replicating this
> impossible due to the lack of information logged.
> 
> Another problem with the ISC DHCPv6 implementation is that it doesn't
> allow you to assign fixed-address information based on the DUID _and_
> IAID, which becomes a problem when a host has more than one active
> adapter.
> 
> The only options are hacking the source code if you feel comfortable
> doing so, or waiting for ISC to make the change (if they ever plan
> to).

I can't see any request to add this feature to ISC DHCPv6 so I've opened

	27564	request for duid+iaid as selection criteria

If we don't know you need a feature we can't put it on the roadmap.
 
> For now, we get by with static assignments made in the database and no
> dynamic allocation via DHCPv6, which does OK in a dual-stack
> environment where IPv6 isn't considered necessary yet, but in the near
> future that will change.
> 
> 
> 
> 
> On Tue, Jan 17, 2012 at 5:04 PM, Randy Carpenter <rcarpen at network1.net> wrote
> :
> >
> > I am wondering how people out there are using DHCPv6 to handle assigning pr
> efixes to end users.
> >
> > We have a requirement for it to be a redundant server that is centrally loc
> ated. DHCPv6 will be relayed from each customer access segment.
> >
> > We have been looking at using ISC dhcpd, as that is what we use for v4. How
> ever, it currently does not support any redundancy. It also does not do very 
> much useful logging for DHCPv6 requests. Certainly not enough to keep track o
> f users and devices.
> >
> > So, my questions are:
> >
> >
> > How are you doing DHCPv6 with Prefix Delegation?
> >
> > What software are you using?
> >
> >
> > When DHCPv6 with Prefix Delegation seems to be about the only way to deploy
>  IPv6 to end users in a generic device-agnostic fashion, I am wondering why i
> t is so difficult to find a working solution.
> >
> > thanks,
> > -Randy
> >
> > --
> > | Randy Carpenter
> > | Vice President - IT Services
> > | Red Hat Certified Engineer
> > | First Network Group, Inc.
> > | (800)578-6381, Opt. 1
> > ----
> >
> >
> 
> 
> 
> -- 
> Ray Soucy
> 
> Epic Communications Specialist
> 
> Phone: +1 (207) 561-3526
> 
> Networkmaine, a Unit of the University of Maine System
> http://www.networkmaine.net/
> 
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org



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