508 Understanding IPv6, Second Edition
References
The following references were cited in this appendix:
■RFC 2460 — “Internet Protocol, Version 6 (IPv6) Specification”
■RFC 2526 — “Reserved IPv6 Subnet Anycast Addresses”
■RFC 3775 — “Mobility Support in IPv6”
■RFC 3776 — “Using IPsec to Protect Mobile IPv6 Signaling Between Mobile Nodes and Home Agents”
■RFC 4861 — “Neighbor Discovery for IP Version 6 (IPv6)”
You can obtain these RFCs from the \RFCs_and_Drafts folder on the companion CD-ROM or from http://www.ietf.org/rfc.html.
Appendix G IPv6 Reference Tables |
511 |
Table G-5 ICMPv6 Messages
ICMPv6 Type |
Message |
Chapter for Details |
129 |
Echo Reply |
5 |
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130 |
Multicast Listener Query |
7 |
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131 |
Multicast Listener Report |
7 |
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132 |
Multicast Listener Done |
7 |
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133 |
Router Solicitation |
6 |
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134 |
Router Advertisement |
6 |
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135 |
Neighbor Solicitation |
6 |
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136 |
Neighbor Advertisement |
6 |
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137 |
Redirect |
6 |
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143 |
Multicast Listener Discovery (MLD) Version 2 |
7 |
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Multicast Listener Report |
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144 |
Home Agent Address Discovery Request |
Appendix F |
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145 |
Home Agent Address Discovery Reply |
Appendix F |
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146 |
Mobile Prefix Solicitation |
Appendix F |
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147 |
Mobile Prefix Advertisement |
Appendix F |
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For a complete and current list, see http://www.iana.org/assignments/icmpv6-parameters.
Table G-6 ICMPv6 Destination Unreachable Messages
Code Field Value |
Description |
|
0 |
- No Route to Destination |
No route matching the destination was found in the |
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routing table. |
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1 |
- Communication with Destination |
The communication with the destination is prohib- |
Administratively Prohibited |
itedbyadministrativepolicy.Thismessageistypically |
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sent when the packet is discarded by a firewall. |
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2 |
- Beyond Scope of Source Address |
The destination is beyond the scope of the source |
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address. A router sends this message when the |
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packet is forwarded by using an interface that is not |
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within the scoped zone of the source address. |
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3 |
- Address Unreachable |
Thedestinationaddressisunreachable.Thismessage |
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is typically sent because of an inability to resolve the |
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destination’s link-layer address. |
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4 |
- Port Unreachable |
The destination port was unreachable. This message |
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is typically sent when an IPv6 packet containing a |
UDP message arrived at the destination but there were no applications listening on the destination UDP port.
512 Understanding IPv6, Second Edition
Table G-6 ICMPv6 Destination Unreachable Messages
Code Field Value |
Description |
5 - Source Address Failed Ingress/Egress |
The packet with this source address is not allowed |
Policy |
because of inbound (ingress) or outbound (egress) |
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packet filtering policies. |
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6 - Reject Route to Destination |
The packet matched a reject route and was dis- |
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carded. A reject route is an address prefix configured |
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on a router for traffic that the router must immedi- |
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ately discard. |
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For a complete and current list, see http://www.iana.org/assignments/icmpv6-parameters.
Table G-7 ICMPv6 Parameter Problem Messages
Code Field Value |
Description |
|
0 |
- Erroneous Header Field Encountered |
An error in a field within the IPv6 header or an |
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extension header was encountered. |
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1 |
- Unrecognized Next Header Type |
An unrecognized Next Header field value was |
Encountered |
encountered. This message is equivalent to the |
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ICMPv4 Destination Unreachable-Protocol |
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Unreachable message. |
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2 |
- Unrecognized IPv6 Option Encountered |
An unrecognized IPv6 option was encountered. |
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For a complete and current list, see http://www.iana.org/assignments/icmpv6-parameters.
Table G-8 IPv6 Neighbor Discovery Option Types
Type |
Option Name |
Source Document |
1 |
Source Link-Layer Address |
RFC 4861 |
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2 |
Target Link-Layer Address |
RFC 4861 |
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3 |
Prefix Information |
RFC 4861 |
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4 |
Redirected Header |
RFC 4861 |
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5 |
MTU |
RFC 4861 |
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7 |
Advertisement Interval |
RFC 3775 |
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8 |
Home Agent Information |
RFC 3775 |
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24 |
Route Information |
RFC 4191 |
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Appendix G IPv6 Reference Tables |
513 |
For a complete and current list, see http://www.iana.org/assignments/icmpv6-parameters.
Table G-9 Neighbor Discovery Messages and the Options That Might Be Included
Neighbor Discovery (ND) Message |
ND Options That Might Be Included |
Router Solicitation |
Source Link-Layer Address option: Informs the router of the |
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link-layer address of the host for the unicast Router Adver- |
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tisement response. |
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Router Advertisement |
■ Source Link-Layer Address option: Informs the |
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receiving host or hosts of the link-layer address of |
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the router. |
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■ Prefix Information option or options: Informs the |
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receiving host or hosts of on-link prefixes and |
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whether to autoconfigure stateless addresses. |
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■ MTU option: Informs the receiving host or hosts of |
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the IPv6 MTU of the link. |
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■ Advertisement Interval option: Informs the receiving |
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host how often the router (the home agent) is |
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sending unsolicited multicast router advertisements. |
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■ Home Agent Information option: Advertises the |
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home agent’s preference and lifetime. |
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■ Route Information option or options: Informs the |
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receiving host or hosts of specific routes to add to a |
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local routing table. |
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Neighbor Solicitation |
Source Link-Layer Address option: Informs the receiving |
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node of the link-layer address of the sender. |
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Neighbor Advertisement |
Target Link-Layer Address option: Informs the receiving |
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node or nodes of the link-layer address corresponding to |
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the Target Address field. |
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Redirect |
■ RedirectedHeaderoption:Includesalloraportion of |
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the packet that was redirected. |
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■ Target Link-Layer Address option: Informs the |
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receiving node or nodes of the link-layer address |
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corresponding to the Target Address field. |
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