Looking for information on IGP choices in dual-stack networks

[morrowc.lists at gmail.com (Christopher Morrow)]

On Tue, Jun 9, 2015 at 3:21 PM, Randy Bush <randy at psg.com> wrote:
>> If you have a production dual-stack network, then we would like to know
>> which IGP you use to route IPv4 and which you use to route IPv6.
>
> in one network, both ospfs.  in another is-is.  i recommend the latter.
>
>> We would also like to know roughly how many routers are running this
>> combination.

why is the question /routers/ and not /networks/ ? (which is still
sort of nutty since your reasonable choices for 'dual stack capable'
are: ospf/ospf3 || isis)

> lots
>
> randy