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IPv6 Network Administration
Niall Richard Murphy and David Malone
Beijing • Cambridge • Farnham • Köln • Paris • Sebastopol • Taipei • Tokyo
IPv6 Network Administration
by Niall Richard Murphy and David Malone
Copyright © 2005 O’Reilly Media, Inc. All rights reserved.
Printed in the United States of America.
Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472.
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Printing History:
March 2005: First Edition.
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information contained herein.
This book uses RepKover™, a durable and flexible lay-flat binding.
ISBN: 0-596-00934-8
[M]
This book is dedicated to the late John Lewis,
mathematician and academic, who enriched
the lives of the many people he touched
with his ability, humility, and good humor.
Rest in peace.
Table of Contents
Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .xiii
Part I. The Character of IPv6
1. The Unforeseen Limitations of IPv4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Addressing Model 3
NAT 5
Security 7
MAC Layer Address Resolution 9
Broadcast Versus Multicast 10
Quality of Service 10
Routing 11
Summary 13
2. The (Un)foreseen Successes of IPv4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Simplicity 14
Resiliency 15
Scalability 15
Flexibility 16
Autoconfiguration 16
Extensibility 17
In Short… 17
vii
3. Describing IPv6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Designed for Today and Tomorrow 18
Packets and Structures 20
Address Architecture 28
ICMPv6 34
Address Selection 45
More About Headers 47
Introduction to Mobile IPv6 50
Routing 53
Security 57
Quality of Service 58
The Promise of IPv6 59
Part II. Deploying IPv6
4. Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Transition Mechanisms 64
Obtaining IPv6 Address Space andConnectivity 78
Network Design 84
Managing IPv4 and IPv6 Coexistence 90
Deploying IPv6 92
Inputs to Deployment Plans 93
Worked Examples 101
Summary 106
5. Installation and Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Workstations and Servers 107
Routers 116
Enabling, Testing, and Troubleshooting 119
Static Routing 131
Configuring Transition Mechanisms 133
Applications 139
Gotchas 142
Summary 143
6. Operations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 144
DNS 144
IPsec 158
viii | Table of Contents
Description:About the Author Niall Murphy has worked in the I.T. and Internet industries since 1995. His initial exposure to computers came with an Amstrad CPC 464 in the early 1980s, from which he never recovered. In college, Niall founded the UCD Internet Society which, at its height, gave Internet access to
