[c-nsp] IOS 15.0 ipv6-related weirdness (fails to fallback to ipv4)

[alan buxey]

Hi,

> > int voip-null0
> >  no ipv6 enable

yes, i have - no such command. I'm looking for whats needed - the same thing happens
on IOS 15 on 2960s/3750x etc -  its nice to see some IPv6 stuff in the system at last
(for example, you can assign IPv6 addresses for the domain servers etc - and IPv6 for TACACS_
and RADIUS etc.... but sometimes you need to just have no IPv6 for some remote stuff.

alan