Type

What kind of message this is.

Reading a capture

Selects how the four octets after the checksum are read. Type is not just a label here — it is the field that decides the rest of the structure, which makes it the same kind of field as the Subtype bits in the 802.11 header several lanes up.

Values

Value	Meaning
0	Echo Reply
3	Destination Unreachable
8	Echo Request
11	Time Exceeded

Bit values written MSB first, matching network byte order.

Where it sits

ICMP Message > Type

• Open in the explorer — ICMP echo over IPv4, in a QoS Data frame

Accuracy

Clause

RFC 792

Verified

Not verified against the standard. Treat this as a claim, not a fact.