(usagi-users 00792) strange ipv6 ping problem

["Jonathan Khoo" <jonath-k@xxxxxxxxxxxxxxxxxx>]

Hi guys,

I have 2 machines, one installed with usagi2.4.9 and the other with
netbsd1.5 (kame). The 2 machines are within the same local network. I
configured an extra ipv6 address for each of the network interface in
the machines. Note that this ipv6 address does not follow the default
addressing by deriving it from the MAC address. 

Configuration method:

(linux)	ifconfig eth0 add <ipv6 address>/64
(netbsd)	ifconfig fxp0 inet6 <ipv6 address>

I can ping6 the new ipv6 address of the netbsd machine but not the other
way round. 

Does anyone know why this is so? I looked at the sysctl configurations
and they looked pretty much the same. 

Thanks for any advices.
Cheers,
Jon.