Why used DHCPv6 when RA has RDNSS and DNSSL?

Gert Doering gert at space.net
Wed Apr 1 08:11:13 CEST 2020


Hi,

On Wed, Apr 01, 2020 at 10:11:30AM +0900, Lorenzo Colitti wrote:
> On Wed, Apr 1, 2020 at 4:03 AM Gert Doering <gert at space.net> wrote:
> 
> > (What they *want* is "IPAM shows what IPv6 address is in use on which
> > device in the network", which DHCPv6 would do nicely, including
> > static assignments via DHCP reservations - while everything else
> > relies on "IPv6/MAC ND logging on the router" or other disintegrated
> > fumbling...)
> 
> Gert, have you asked why the solutions listed in Enno's blog post
> <https://theinternetprotocolblog.wordpress.com/2020/03/14/does-one-need-dhcpv6/>
> earlier in this thread don't work for them? Specifically, the router-based
> IP snooping and NDP monitoring features in switch platforms? Is it just
> that support for these features is patchy, and existing IPAMs do not
> support them? 

Mostly this, plus control / reservations ("this machine is supposed to 
get *that* address").

> Or is there some deeper problem? What can we do to make this
> better? Yes, using IA_NA would address this particular need, but it has
> disadvantages compared to SLAAC as well.

You could just stop being the ugly kid that does not want to play with
the others.

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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