Sender Hardware Address SHA

The sender's MAC address.

Reading a capture

Compare this against Address 2 in the 802.11 header several lanes up. On an infrastructure network they often differ, because the AP transmits the frame while the original sender is somewhere behind it — and that difference is the whole reason the four-address format exists.

Where it sits

ARP Packet > Sender Hardware Address

• Open in the explorer — ARP request in a QoS Data frame

Accuracy

Clause

RFC 826

Verified

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