Packet Décodeur

Paste a raw Ethernet frame or an IPv4/IPv6 packet as hexadecimal bytes. Each displayed layer includes its byte range. The decoder stops safely at a truncated header, obeys IPv4 header length and declared packet lengths, and leaves unsupported payloads as raw bytes.

It shows DNS header fields only; DNS names and compression pointers are deliberately kept as raw bytes, so malformed pointer cycles cannot trigger recursive parsing. This is an inspection aid, not a packet validator.