Is ARP source hardware address redundant?

Question

I'm working on a network security project and I noticed something that I can't explain:

Why do we need a source hardware address field in arp? Isn't it already contained in the ethernet header?

The only reason I've found that makes any sense is proxy ARP — , Mar 19 '16 at 17:53

score 3 · Answer 1 · answered Oct 23 '09 at 11:09

3

ARP is designed this way so that it can run over other hardware, not just Ethernet. Have a look here.

answered Oct 23 '09 at 11:09

NT_

1 Answers1