feat: handle ARP replies#31
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From now on UPE is able to handle ARP requests that are destined to UPE's interface IP - it replies with ARP Reply. Devices are now able to discover UPE's MAC. Reply is built in-place by rewriting the incoming packet buffer: - Swap Ethernet src/dst - Set ARP opcode to Reply (2) - Swap sender and target fields
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From now on UPE is able to handle ARP requests that are destined to UPE's interface IP - it replies with ARP Reply.
Devices are now able to discover UPE's MAC.
Reply is built in-place by rewriting the incoming packet buffer: