Problem in IPV6 Ping Implementation

Hi,

i have tried to ping implementation for ipv6 using icmpv6. when i send the packet, the bellow program sends only Neighbor solicitation message in the network instead of sending echo message.

Could any one help me in solving this problem?.
when is set sin6_scope_id as 0. it is sending Neighbor solicitation message into the network. otherwise, it is giving error as

WSAEADDRNOTAVAIL
10049
The requested address is not valid in its context.

how to send the broadcast echo message ( broad cast ip : ff02::1) in the ipv6 network ?

Thanka in advance.