[c-nsp] IS-IS "advertise passive-only" doesn't work for IPv6

[Oliver Boehmer (oboehmer)]

> 
> I've noticed that
> 
> router isis
>  advertise passive-only
> 
> or
> 
> interfaces POS2/1/0
>  no isis advertise prefix
> 
> does work only for IPv4, but not IPv6 (at least in this multitopo
> setup). Same behaviour in 12.2(25)S2 and 12.3(11)T2.
> 
> Can anyone confirm?

Yes, this is correct. This command only affects IPv4
prefixes/interfaces.

	oli