Generating Unsolicited Neighbor Solicitation

[Edgar Fuß <ef%math.uni-bonn.de@localhost>]

Is there a way of manually triggering an Unsolicited Neighbor Solicitation 
(the IPv6 equivalent of a gratuitous ARP)?

When adding an adress to an interface, one should be sent, but I see only the 
DAD and a Mulicast join.

Maybe my filter rules are bad -- I always forget whether tcpdump sees 
outgoing packets before they pass (or don't) the packet filter or only 
those actually sent on the interface (likewise for incoming ones).