Represents an ICMPv6 packet.

Notes: 1. number of octets excluding the error datagram that is usually appended in optInfo, i.e. the Type|CODE|CHECKSUM|UNUSED/POINTER/MTU/OTHER as defined in RFC2463 2. Any ICMP type with MSB set, i.e. >=128 is an Informational ICMP message

Extends

Name	Type	Description
FieldsChunk	(unknown -- not in documented files)

Fields

Name	Type	Description
chunkLength
type	Icmpv6Type	1 byte
chksum	int	int code; // 1 byte //TODO this should be specific to different ICMP types.
crcMode	CrcMode	4 bytes 'type' specific values

Packet operations (observed)

action	module
peekAtFront	Icmpv6, Ipv6NeighbourDiscovery, Ipv6, Udp
peekDataAt	Icmpv6
popAtFront	PingApp, Udp
removeAtFront	Icmpv6

Source code

//
// Represents an ICMPv6 packet.
//
// Notes:
//    1. number of octets excluding the error datagram that is usually appended
//       in optInfo, i.e. the Type|CODE|CHECKSUM|UNUSED/POINTER/MTU/OTHER
//       as defined in RFC2463
//    2. Any ICMP type with MSB set, i.e. >=128 is an Informational ICMP message
//
class Icmpv6Header extends FieldsChunk
{
    chunkLength = ICMPv6_HEADER_BYTES;
    Icmpv6Type type;     // 1 byte
    //int code; // 1 byte //TODO this should be specific to different ICMP types.
    int chksum = 0;     // 2 bytes
    CrcMode crcMode = CRC_MODE_UNDEFINED;
    // 4 bytes 'type' specific values
}

File: src/inet/networklayer/icmpv6/Icmpv6Header.msg

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