neighbor discovery problem

[Pete French]

> The network is pretty simple,
>
> gateway :
> em0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>         options=b<RXCSUM,TXCSUM,VLAN_MTU>
>         inet6 fe80::207:e9ff:fe0e:dead%em0 prefixlen 64 scopeid 0x1 
>         inet6 2a01:678:1:443:: prefixlen 64 
>         inet6 2a01:678:100:: prefixlen 48 

Hmmm, are machine numbers of all zeroes legal in IPv6 ? I would
configure those as '2a01:678:1:443::1' and '2a01:678:100::1' if
I were you. All zeroes as a machine number is certainly a no-no in
IPv4, and I wouldn't use it in IPv6 either. I have no idea if it's
actually a problem, but it gives me a bad feeling....

-pete.