Destination Port DstPort

The receiving endpoint's port.

Reading a capture

With the two IP addresses one lane up, this is the four-tuple a NAT or a firewall keys on — the same shape as TCP's, with no connection state behind it to make the mapping unambiguous.

Where it sits

Destination Port

Authored in UDP datagram . Drawn in 2 frames.

• UDP over IPv6, in a QoS Data frame
• UDP over IPv4, in a QoS Data frame

Accuracy

Clause

RFC 768

Byte order

big-endian — network byte order

Verified

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