Protocol

What the payload is.

Reading a capture

Selects the next bundle in the stack, the same way EtherType did one lane up.

Values

Value	Meaning
1	ICMP
6	TCP
17	UDP

Bit values written MSB first, matching network byte order.

Where it sits

IPv4 Datagram > Protocol

• Open in the explorer — TCP over IPv4, in a protected QoS Data frame, aggregated
• Open in the explorer — ICMP echo over IPv4, in a QoS Data frame
• Open in the explorer — TCP over IPv4, in a protected QoS Data frame
• Open in the explorer — TCP over IPv4, in an open QoS Data frame
• Open in the explorer — UDP over IPv4, in a QoS Data frame

Accuracy

Clause

RFC 791 §3.1

Verified

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