+++ This bug was initially created as a clone of Bug #4545 +++
Samba3 does not support Link-local Multicast Name Resolution as defined in RFC 4795. Vista and Longhorn both use LLMNR for duplicate name detection and for name resolution in networks with and without other name resolution mechanisms (i.e. DNS).
A overview of name resolution with LLMNR can be found at http://www.microsoft.com/technet/community/columns/cableguy/cg1106.mspx#EME.
Vista and Longhorn use this to resolve unqualified names and names ending in .local.
LLMNR can be observed on the wire when using Vista and Longhorn, during boots and when resolving a name (e.g. when mapping a share if the host does not have DNS configured).
LLMNR should be implemented in IPv4 and in IPv6.
Let me know if I can help. I can produce traces and test any attempts at an implementation.
*** This bug has been marked as a duplicate of bug 4545 ***