The Cisco ASR 9000 Series Aggregation Services Router Carrier Grade IPv6 Command Reference preface contains these sections:
Changes to This Document
This table lists the technical changes made to this document since it was first printed.
Table 1 Changes to This Document
Republished with documentation updates for Cisco IOS XR Release 4.2.1
Initial release of this document for Cisco IOS XR Release 4.2.0.
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