[c-nsp] IPV6 on npe-g1 and npe-g2

[Mark Kent]

I'm looking for real-world recommendations on IOS for adding IPV6 
support on an npe-g1 and npe-g2.  Current npe-g1, 12.2(25)S5, 
has been up for 3 years, 31 weeks, and I am interested in a 
version that will yield similar stability :-)

BGP, OSPF, PA-MC-T3, MLPPP and 
"ip verify unicast source reachable-via any allow-default" 
(for RTBH) are all I need.

Thanks,
-mark