Ipv6 cheat sheet
- 1. IPv6 Cheat Sheet (www.estoile.com) IPv6 Extension Headers ( NH = Next Header ) IPv6 Header TCP Header NH = TCP + Data IPv6 Header Version (4) Traffic Class (8) Flow Label (20) IPv6 Header Routing Header TCP Header NH = Routing NH = TCP + Data Payload Length (16) Next Header (8) Hop Limit (8) Source Address (128) (16 bytes) IPv6 Header Routing Header Fragment Header TCP Header NH = Routing NH = Fragment NH = TCP + Data Destination Address (128) (16 bytes) Version : IP version number (6). IPv6 Addressing Traffic class : Used by originating nodes and/or forwarding routers to identify Address Type Binary Prefix IPv6 Notation and distinguish between different classes or priorities of IPv6 packets. Flow label : Used by a source to label sequences of packets for which it Unspecified 00...0 (128 bits) ::/128 requests special handling by the IPv6 routers. Loopback 00...1 (128 bits) ::1/128 Payload Length : Length of the IPv6 payload (also the extension headers). Next Header : Identifies the type of header following the IPv6 header. Multicast 11111111 FF00::/8 Hop Limit : Decremented by 1 by each node that forwards the packet. Link-local unicast 1111111010 FE80::/10 Source Address : Address of the originator of the packet Site-local unicast 1111111011 FEC0::/10 Destination Address : Address of the intended recipient of the packet (possibly not the ultimate recipient, if a Routing header is present) Global unicast (everything else) Unicast address assigned to more than one General Format for IPv6 Global Unicast Addresses Anycast interface. Global routing prefix (n bits) Subnet ID (m) Interface ID (128-n-m) IPv4-Compatible IPv6 0:0:0:0:0:0:A.B.C.D IPv6 Global Unicast Addresses (not starting with binary value 000) IPv4-Mapped IPv6 0:0:0:0:0:FFFF:A.B.C.D ! 000 Global routing prefix (n) Subnet ID (64-1) Interface ID (64) 6to4 2002::/16 IPv6 Global Unicast Addresses (2000::/3 prefix, IANA delegated) Well Known Multicast Addresses 001 Global routing prefix (45) Subnet ID (16) Interface ID (64) FF01:0:0:0:0:0:0:1 All Nodes Addresses Interface-local IPv4-compatible IPv6 address FF02:0:0:0:0:0:0:1 All Nodes Addresses Link-local 0 (80 bits) 0 (16 bits) IPv4 address (32 bits) FF01:0:0:0:0:0:0:2 All Routers Addresses Interface-local IPv4-mapped IPv6 Address FF02:0:0:0:0:0:0:2 All Routers Addresses Link-local 0 (80 bits) FFFF (16 bits) IPv4 address (32 bits) FF05:0:0:0:0:0:0:2 All Routers Addresses Site-local Link-Local IPv6 Unicast Address (FE80::/10 ) FF02:0:0:0:0:1:FFXX:XXXX Solicited-Node Address Link-local 1111111010 (10 bits) 0 (54 bits) Interface ID (64 bits) FF02:0:0:0:0:0:0:4 DVMRP Routers Link-local Site-Local IPv6 Unicast Address (FEC0::/10) FF02:0:0:0:0:0:0:5 OSPFIGP Link-local 1111111011 (10 bits) Subnet ID (54) Interface ID (64 bits) FF02:0:0:0:0:0:0:6 OSPFIGP DRs Link-local Subnet-Router Anycast Address FF02:0:0:0:0:0:0:9 RIP Routers Link-local Subnet Prefix (n bits) 0 (128-n) FF02:0:0:0:0:0:0:D All PIM Routers Link-local Ethernet Types IPv6 Option Types (8 bits, 3 fields) FF02:0:0:0:0:0:0:16 All MLDv2 Routers Link-local act - 2 bits 0800 IPv4 00 skip over option FF02:0:0:0:0:0:1:2 All DHCP Agents Link-local 0806 ARP 01 silently discard FF05:0:0:0:0:0:1:3 All DHCP Servers Site-local 8035 Reverse ARP 10 discard and send ICMP 86DD IPv6 11 discard and send ICMP, if unicast FF0X:0:0:0:0:0:0:101 Network Time Protocol Variable Scope 8847 MPLS Unicast chg - 1 bit 8848 MPLS Multicast 0 = option data does not change en-route Multicast Address Scope 8863 PPoE (Discovery stage) 1 = option data may change en-route FF Flags Scope Group ID 1 Interface-local 8864 PPoE (PPP sess stage) rest - 5 bits, the rest of the Option Type (8 bits) (4) (4) (112) 2 Link-local 4 Admin-local IPv6 Next Header Fields ICMPv6 Informational Messages Flags (000T) 5 Site-local T = 0 Well-known 8 Organization-local 041 IPv6 E Global 128 Echo Request T = 1 Transient 000 IPv6 Hop-by-Hop Option 129 Echo Reply 060 Destination Options for IPv6 ICMPv6 Error Messages (Type/Code) 130 Multicast Listener Query 043 Routing Header for IPv6 131 Multicast Listener Report 1 Destination Unreachable 044 Fragment Header for IPv6 132 Multicast Listener Done 0 - no route to destination 051 Authentication Header (AH) 133 Router Solicitation 1 - communication with destination 050 Encap Security Payload (ESP) 134 Router Advertisement administratively prohibited 059 No Next Header for IPv6 135 Neighbor Solicitation 2 - (not assigned) 136 Neighbor Advertisement 3 - address unreachable 002 Internet Group Management (IGMP) 137 Redirect Message 4 - port unreachable 006 Transmission Control (TCP) www.estoile.com 138 Router Renumbering 2 Packet Too Big 017 User Datagram (UDP) 139 ICMP Node Information Query 3 Time Exceeded 046 Reservation Protocol (RSVP) 140 ICMP Node Information Response 0 - hop limit exceeded in transit 047 General Routing Encapsulation (GRE) 143 Version 2 Multicast Listener Report 1 - fragment reassembly time exceeded 055 IP Mobility (MOBILE) 144 Home Agent Address Discovery Request 4 Parameter Problem 058 ICMP for IPv6 (ICMPv6) 145 Home Agent Address Discovery Reply 0 - erroneous header field 089 OSPFIGP 146 Mobile Prefix Solicitation 1 - unrecognized Next Header type 094 IP-within-IP Encapsulation Protocol (IPIP) 147 Mobile Prefix Advertisement 2 - unrecognized IPv6 option 103 Protocol Independent Multicast (PIM) 128 - 255 Informational Messages 0-127 Error Messages 135 Mobility Header