carp(4) and IPv6 NDP - MAC Address Discovery Confusion

["Brian A. Seklecki" <lavalamp%spiritual-machines.org@localhost>]

All:

  Is anyone running an HA carp(4) pair on IPv6 ?

  My upstream ISP is reporting that, for both my HA Gateway, and my
  Physical interface, IPv6 NDP on his Cisco is returning the MAC address
  of my physical interface.

  In this case, my "phsysical" interface for carp(4) interface
  is actually a vlan(4) on wm(4).

  Should NDP discoveries for the CARP interface return the  00:00:5e
  prefix?

  Thanks, ~BAS

The ISP sees this on his Cisco:

  admin@SNS-PHX-MDC1-Texas> show ipv6 neighbors | match 189
  2607:f000:1::4      00:60:e0:44:99:14  reachable   20  yes ge-0/3/0.189
  2607:f000:1::5      00:60:e0:44:99:14  stale       407 yes ge-0/3/0.189

2607:f000:1::1-3 are his VRRP6/HSRP6 hosts.  4,5,6 are me.

  Details:

  # uname -a
  NetBSD br0 4.0_STABLE NetBSD 4.0_STABLE (CFRDMDROOT.MPACPI-$Revision:
  1.21.4.5 $) #0: Fri Oct 31 14:23:47 EDT 2008

  carp9: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        carp: MASTER carpdev vlan9 vhid 9 advbase 1 advskew 100
        address: 00:00:5e:00:01:09
        inet6 2607:f000:1::4 prefixlen 64

  vlan9: flags=8943<UP,BROADCAST,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu
  1500
        vlan: 9 parent: wm0
        address: 00:60:e0:44:99:14
        inet6 fe80::260:e0ff:fe44:9914%vlan9 prefixlen 64 scopeid 0xa
        inet6 2607:f000:1::5 prefixlen 64


  wm0: flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST>
  mtu 1500
  capabilities=7ff80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,
  UDP4CSUM_Rx,UDP4CSUM_Tx,TCP6CSUM_Rx,TCP6CSUM_Tx,UDP6CSUM_Rx,
  UDP6CSUM_Tx,TSO6>
        enabled=0
        address: 00:60:e0:44:99:14
        media: Ethernet autoselect (100baseTX)
        status: active
        inet6 fe80::260:e0ff:fe44:9914%wm0 prefixlen 64 scopeid 0x1