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Jigsawing packets: How I sent L2-L7 frames and read them with Scapy

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October 20, 2026

Lab Goal: Debug L2 vs L3 vs L4 Setup: VyOS on Oracle VM - single terminal L2 - Data Link Listener on same terminal: sudo tcpdump -i eth0 -e arp -n & Send: sendp(Ether(dst="ff:ff:ff:ff:ff:ff")/ARP(pdst="192.168.56.101")) # 1. SUMMARY a.summary() 'Ether / ARP who has 192.168.56.1 says 192.168.56.101' 2. FULL DECODE - a.show() [ Ethernet ] dst = None (Broadcast FF:FF:FF:FF:FF:FF) src = 08:00:27:bf:9a:64 type = ARP ...

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