Why used DHCPv6 when RA has RDNSS and DNSSL?
ignatios at cs.uni-bonn.de
ignatios at cs.uni-bonn.de
Tue Mar 31 17:30:00 CEST 2020
On Tue, Mar 31, 2020 at 02:30:46AM +0200, Roger Wiklund wrote:
> Hi
> I played around with IPv6 on my Mac today (Mac OS Catalina) and I noticed
> that besides the IP from DHCPv6 (dynamic) it's also generating two other
> addresses.
[...]
> I don't really know that the "secured" address is used for TBH (both
> autoconf are randomized and not based on the MAC)
> The temporary address is used for outgoing connections and is changed
> every so often.
> When I read DHCPv6 vs SLAAC it often boils down to "control" but I don't
> see the need to allocate a dynamic address if the autogenerated are used.
> For client's you dont really have any inbound connections unless it's a
> support case.
Ha! Yes, you're arguing from a client perspective. When I am in a bigger
environemnt, a lot of machines need to be addressable (be it for services
outside their local link, be it to secure access to special infrastructure
to a limited set of clients, be it for pulled backups, to name a few.
@work I use lots of dhcpv6 in these cases. We specifically don't
use it on the WLAN where personal devices live; those use the
autoconf'd tmp addresses, and pooled natted DHCP addresses for V4.
Regards,
-is
More information about the ipv6-ops
mailing list