IPv6 Multicast issue?

[jtrotz .]

I am trying to convert some VMWARE hosted test servers (fedora 18 & Win7)
(on Cisco UCS blade)  to use IPV6.
They are in one part of our internal network on a L2 VLAN hosted on Nexus
5K & 7K switches terminating on a 6500 with a dual stacked L3 interface
(not an SVI).
The end result is that the servers are several L2 hops away from the routed
6500 interface.

The IPV4 connectivity works great!

Using show ipv6 neighbors:   On the 6500 I only see the link-local address
of the neighbor servers.

FE80::250:56FF:FE11:2233                   57 0050.5611.2233  STALE Gi1/24
FE80::7D12:8F6:81C5:5F9A                    1 000c.298f.90cb  STALE Gi1/24
FE80::607A:39E2:A4E3:128D                 125 000c.298f.90c1  STALE Gi1/24
FE80::20C:29FF:FECF:BE5D                   49 000c.29cf.be5d  STALE Gi1/24

On the Win7 server VM  I see:  (netsh interface ipv6 neigh)

Internet Address              Physical Address   Type
----------------------------  -----------------  -----------
2606:2b00:0:a00::1            Unreachable        Unreachable      <==
router on 6500
2606:2b00:0:a00::beef         00-0c-29-cf-be-5d  Stale            <== a
linux server on same VMWARE host
fe80::20c:29ff:fecf:be5d      00-0c-29-cf-be-5d  Stale            <== a
linux server on same VMWARE host
fe80::215:c7ff:fec5:db00      00-15-c7-c5-db-00  Stale (Router)   <==
router on 6500


Its sees both the 6500 router interface's link-local and global addresses,
although the global is "unreachable".

>From the 6500 I can ping both server's link-local address OK, but not the
global address.
I tried letting the server pick it's own address using *SLAAC - this worked
OK, so its getting RAs OK. But I can't ping those
*
*addresses either from the 6500.

*
*Installed wireshark on the fedora VM and it sees the router's RAs and the
Win7's neighbor advertisements/solicitations.

*
*Also noticed that when I 1st ping the VM servers link-local addresses
there is a 2 second pause and then it pings OK.**
After doing this I can ping the router's link-local address from the VMs
with no pause, but the ping would fail UNTIL I 1st ping from the router
side.

*
*Is this a case of needing to configure MLD on the nexus and UCS
switches?  Is there anything I need to do to verify its correctly setup?
*
*
*
*any help would be greatly appreciated,

*
*-Jim
*
*
*
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