Indeed, the NDP cache is mostly the only way to get the MAC/IPv6 mapping... because even if DHCP is mandated and SLAAC disabled, nothing prevent a bad guy to use static configuration of his/her IPv6 address (actually you could use SAVI switch to enforce DHCP addresses for global addresses but not for link-local).
...with some further comments, some SAVI switches can also log (in our case over syslog) all newly discovered mappings, the NDP cache can be browsed by SNMP requests, and I still wonder about those IETF drafts where DHCP is used to signal a change in the NDP cache (which does not seem related to the meaning and purpose of DHCP). -éric > -----Original Message----- > From: [email protected] [mailto:ipv6-ops- > [email protected]] On Behalf Of Erik Kline > Sent: mercredi 22 mai 2013 08:18 > To: Tim Chown > Cc: [email protected]; Phil Mayers > Subject: Re: DHCPv6 accounting > > > I also recall there's a personal IETF draft suggesting use of DHCP for a > router to report addresses seen via ND on a link. > > there were two at the same time, I seem to recall, one of which was: > > http://tools.ietf.org/html/draft-asati-dhc-ipv6-autoconfig-address- > tracking-00
