Clarification w.r.t MDLv2 reports send at reboot in FreeBSD 8.0 Release

SitaRamaRaju Kunparaju sitarama.raju at
Thu Feb 25 11:33:57 UTC 2010

FreeBSD 8.0 Release send two MLDv2 Reports at reboot before performing DAD for its Link Local address,
One for the IPv6 Solicited-node multicase address(i.e FF02::1:FFDB:ACD5)  and other is unknown (i.e FF02::2:21d:d024 ).
Could anyone please clarify me, why FreeBSD is send MLDv2 Report for FF02::2:21d:d024 multicast address?
Please fine the attached  ifconfig output and tcpdump trace captures and reboot time.
Let me know if your need more info
Thanks in advance

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bge0: flags=8802<BROADCAST,SIMPLEX,MULTICAST> metric 0 mtu 1500
	ether 00:13:21:d3:a1:dd
	media: Ethernet autoselect (none)
	status: no carrier
fxp0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
	ether 00:d0:b7:bd:ac:b5
	inet6 fe80::2d0:b7ff:febd:acb5%fxp0 prefixlen 64 scopeid 0x2 
	inet6 3ffe:501:ffff:100:2d0:b7ff:febd:acb5 prefixlen 64 autoconf 
	media: Ethernet autoselect (100baseTX)
	status: active
plip0: flags=8810<POINTOPOINT,SIMPLEX,MULTICAST> metric 0 mtu 1500
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
	inet netmask 0xff000000 
	inet6 ::1 prefixlen 128 
	inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4 

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