10.8.28.2 - (Sessions: 0 Jobs: 0)> use
auxiliary/scanner/discovery/ipv6_multicast_ping
10.8.28.2 - (Sessions: 0 Jobs: 0) auxiliary(ipv6_multicast_ping) > show
options

Module options (auxiliary/scanner/discovery/ipv6_multicast_ping):

   Name       Current Setting  Required  Description
   ----       ---------------  --------  -----------
   INTERFACE                   no        The name of the interface
   SHOST                       no        The source IPv6 address
   SMAC                        no        The source MAC address
   TIMEOUT    5                yes       Timeout when waiting for host
response.

10.8.28.2 - (Sessions: 0 Jobs: 0) auxiliary(ipv6_multicast_ping) > run

[*] [2012.02.03-16:11:02] Sending multicast pings...
[*] [2012.02.03-16:11:07] Listening for responses...
[*] [2012.02.03-16:11:09]    |*| fe80::20c:29ff:fe4c:2f4d =>
00:0c:29:4c:2f:4d
[...]
[*] Auxiliary module execution completed