[c-nsp] ASR9001 ASR9901 IOS-XR IPv6 filtering

[cnsp at marenda.net]

Thank you for sharing your experience and the concrete example . 
Also good to know that I am not the only one trying to filter 
 up-streams/peerings and of course the customer's traffic. 

Sorry for the late "thanks", I had to collect logs and dump 
from the 9901 ☹ again, 
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvs53433 
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu49346 
with - for this list - a trivial configuration. 
Worst cisco experience for the last 10 years. 

Mit freundlichen Grüßen 
Kind regards 
Veuillez agréer mes salutations distinguées 
Met vriendelijke groet 

Jürgen Marenda.