[c-nsp] DHCPv6 and Windows

[Kris Amy]

Hi all,

I'm having trouble getting DHCPv6 and Windows (specifically 7) to interop
for the correct default gateway.

It is picking up the address OK but the default gateway is staying as
Link-Local IP.

So far I've tried all combinations of enabling/disabling

 ipv6 nd managed-config-flag
 ipv6 nd other-config-flag

on the relevant LAN interface and various combinations of

netsh int ipv6 set int <ifIndex> managedaddress=disabled advertise=disabled
routerdiscovery=dhcp

Hoping someone has the magic combination to get it to work.

OS X worked first time without any changes.

I believe if the M and O flags are set then the client should go into
stateful mode and request the default gateway from the advertising router.

Cheers,
Kris