link local address used in VRRPv3

Hello all,

I would like to ask your comments on " The first address must be the
IPv6 link-local
   address associated with the virtual router.  " from VRRP v3 draft.

As Link Local address is already used at IPv6 header of VRRP
announcement, I think this information is redundant. 
I wonder you opinion on this.


http://www.ietf.org/internet-drafts/draft-ietf-vrrp-ipv6-spec-07.txt
5.3.8  IPv6 Address(es)

   One or more IPv6 addresses associated associated with the virtual
   router.  The number of addresses included  is specified in the "Count
   IP Addr" field.  The first address must be the IPv6 link-local
   address associated with the virtual router.  These fields are used
   for troubleshooting misconfigured routers.  If more than one address
   is sent it is recommended that all routers be configured to send
   these addresses in the same order to make it easier to do this
   comparison.


Thanks,
-mansu



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