About the Technical Reviewers

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1 About the Author p. xiii About the Technical Reviewers p. xv Acknowledgments p. xvii Introduction p. xix IPv6 p. 1 IPv6-Why? p. 1 IPv6 Benefits p. 2 More Address Space p. 2 Innovation p. 3 Stateless Autoconfiguration p. 3 Renumbering p. 4 Efficiency p. 4 Myths p. 4 Security p. 4 Mobility p. 5 Quality of Service p. 5 Routing p. 5 The Transition Will Be Too Expensive p. 5 IPv6-When? p. 6 Differences Between IPv4, IPv6, and Other Protocols p. 6 IPX p. 8 DECnet Phase IV p. 8 Apple Talk p. 9 OSI CLNP p. 9 TCP/IP p. 10 IP Version 6 p. 12 Getting Started p. 13 IPv6 Addressing p. 15 Interface Identifiers p. 16 Multicast Scoping p. 17 Special Addresses p. 18 Address Allocation and Assignment p. 20 Enabling IPv6 p. 21 Windows p. 22 Address Privacy p. 24 FreeBSD p. 24 Triggering Router Solicitations p. 25 Address Privacy p. 26 Linux p. 26 MacOS p. 27 The DNS Problem p. 29

2 Diagnostics p. 29 Ping and Traceroute p. 30 Tunnels p. 33 "Automatic Tunneling" p. 34 6over4 and ISATAP p. 34 Teredo p. 35 6to4 p. 35 6to4 Under Windows p. 36 6to4 Under MacOS p. 37 6to4 Under FreeBSD p. 39 6to4 Under Linux p. 40 6to4 on a Cisco Router p. 43 6to4 Security Issues p. 44 Monitoring 6to4 p. 44 Manually Configured Tunnels p. 46 Windows p. 46 FreeBSD p. 48 MacOS X p. 50 Linux p. 50 Cisco p. 54 Manually Configured Tunnels and NAT p. 55 Getting a Tunnel p. 56 Routing p. 57 Routing IPv6 p. 58 Routing on Windows XP p. 58 FreeBSD p. 61 MacOS p. 61 Linux p. 62 Static Routes p. 63 Dynamic Routing p. 66 Installing Zebra p. 67 Enabling IPv6 on Cisco and Zebra p. 71 RIPng p. 74 OSPFv3 p. 76 Areas and Metrics p. 76 Redistribution p. 77 Neighbors p. 78 BGP p. 80 Address Families p. 81 ibgp p. 84 Global and Link-Local Next Hop Addresses p. 86

3 Interdomain Routing Guidelines p. 87 Avoiding Tunnels p. 90 OSPFv3 and BGP for IPv6 on Juniper p. 92 Site-Local Addresses p. 96 The DNS p. 99 Representing IPv6 Information in the DNS p. 100 RFC 1886: AAAA and ip6.int p. 101 RFC 2874: A6, DNAME Bitlabels, and ip6.arpa p. 101 The A6 Name-to-Address Mapping p. 102 The Bitlabel and DNAME Address-to-Name Mapping p. 102 RFC 1886 vs. RFC 2874 p. 104 RFC 3596: AAAA and ip6.arpa p. 104 The Current Situation p. 105 Installing and Configuring BIND p. 106 Installing BIND p. 106 Starting BIND at Boot Time p. 106 Configuring BIND p. 107 Choosing an Address for Your Nameserver p. 110 Adding IPv6 Information to Zone Files p. 110 AAAA Records p. 111 Reverse Mapping p. 113 RFC 1886 and 2874 Reverse Mapping Hacks p. 115 Dynamic DNS Updates p. 116 Applications p. 117 API Issues p. 117 IPv4-Mapped IPv6 Addresses p. 118 Handling Multiple Addresses p. 119 Old School: FTP, Telnet, and SSH p. 120 Browsing the Web p. 121 Mail Clients p. 123 Media Players p. 124 The Apache 2 Web Server p. 127 Listening p. 127 Virtual Hosting p. 128 The Sendmail Mail Transfer Agent p. 130 The UW POP and IMAP Servers p. 131 The Transition p. 133 Planning the Transition p. 134 IPv4 Address Depletion and the HD Ratio p. 134 IPv6 vs. Network Address Translation p. 135 Making a Plan p. 135

4 Turning Off IPv4? p. 137 Application Transition Scenarios p. 138 Proxying p. 140 Apache as a Proxy p. 141 Caching p. 143 Using a Proxy p. 144 Transport Protocol Translation p. 146 DNS ALG: Trick-or-Treat Daemon p. 146 Faith on FreeBSD p. 147 ptrtd on Linux p. 148 Network Address Translation-Protocol Translation p. 148 IPv6 Internals p. 151 Differences Between IPv4 and IPv6 p. 151 Checksums p. 154 Extension Headers p. 154 ICMPv6 p. 155 Neighbor Discovery p. 157 Neighbor Unreachability Detection p. 158 Stateless Address Autoconfiguration p. 158 Duplicate Address Detection p. 159 Address Lifetime p. 161 Renumbering p. 161 Address Prefix and Router Lifetime Mismatch p. 163 Address Selection p. 163 Path MTU Discovery and Fragmentation p. 166 DHCPv6 p. 167 KAME DHCP6 p. 168 Linux DHCPv6 p. 169 Cisco IOS DHCPv6 p. 169 IPv6 Over p. 171 IPv6 over Ethernet p. 171 Multicast p. 171 Group Membership Management p. 173 IPv6 over Wi-Fi p. 174 IPv6 over IEEE 1394 p. 175 IPv6 over PPP p. 176 Security p. 179 Differences from IPv4 p. 179 Leveraging the Hop Limit p. 179 The Larger Address Space p. 180 On-link Dangers p. 180

5 Node Information Queries p. 181 Filters p. 182 TCP Wrappers p. 183 Stateful Filtering to Replace NAT p. 184 Linux ip6tables p. 185 MacOS and FreeBSD ip6fw p. 186 IPFilter p. 188 FreeBSD Packet Filter p. 190 Windows netsh firewall p. 193 Cisco IPv6 Access Lists p. 193 Applying Access Lists to Interfaces p. 194 Stateful Filtering with Reflexive Access Lists p. 195 Filtering Services on the Router p. 197 Unicast Reverse Path Forwarding p. 198 Filter Limitations p. 199 IPsec p. 200 IPsec Headers, Modes, and Algorithms p. 200 Exchanging Keys and Security Associations p. 202 IPsec on the Wire p. 204 The KAME IPsec Implementation p. 205 IPsec Advantages and Limitations p. 208 Troubleshooting p. 209 tcpdump p. 209 tcpdumping ICMPv6 p. 210 tcpdumping UDP p. 212 tcpdumping TCP p. 214 Promiscuity p. 216 Filters p. 217 IPv6 Connectivity p. 219 Address Availability and DAD Failures p. 219 ndp p. 221 traceroute6 p. 221 traceroute and ping on a Cisco Router p. 222 Forcing the IP Version p. 223 Path MTU Discovery and Fragmentation p. 223 Providing Transit Services p. 227 Getting Address Space p. 227 Provisioning Customers p. 228 Single Address Customers p. 228 Single Subnet Customers p. 228 Stateless Autoconfiguration p. 229

6 Manual Configuration p. 229 Multi-Subnet Customers p. 231 Manual Configuration p. 232 DHCPv6 Prefix Delegation p. 233 Using a Routing Protocol Toward the Customer p. 233 Multihomed Customers p. 235 Hybrid Autoconfig/Manual Configuration p. 236 IPv6 Dial-Up p. 238 DNS and Customer Service p. 238 Running a Private 6to4 Gateway p. 239 The IETF and RFCs p. 243 Startup Scripts p. 249 Red Hat Linux p. 249 FreeBSD p. 251 MacOS p. 252 Postscript p. 255 MIPv6, SEND, and Shim6 p. 255 The IETF Attitude Toward IPv6 p. 256 Index p. 257 Table of Contents provided by Blackwell's Book Services and R.R. Bowker. Used with permission.

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