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https://github.com/gchq/CyberChef
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Merged upstream master
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@@ -212,6 +212,22 @@ const IP = {
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output += "\nThis is a reserved multicast address.";
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output += "\nMulticast addresses range: ff00::/8";
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}
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// Detect possible EUI-64 addresses
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if ((ipv6[5] & 0xff === 0xff) && (ipv6[6] >>> 8 === 0xfe)) {
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output += "\n\nThis IPv6 address contains a modified EUI-64 address, identified by the presence of FF:FE in the 12th and 13th octets.";
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var intIdent = Utils.hex(ipv6[4] >>> 8) + ":" + Utils.hex(ipv6[4] & 0xff) + ":" +
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Utils.hex(ipv6[5] >>> 8) + ":" + Utils.hex(ipv6[5] & 0xff) + ":" +
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Utils.hex(ipv6[6] >>> 8) + ":" + Utils.hex(ipv6[6] & 0xff) + ":" +
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Utils.hex(ipv6[7] >>> 8) + ":" + Utils.hex(ipv6[7] & 0xff),
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mac = Utils.hex((ipv6[4] >>> 8) ^ 2) + ":" + Utils.hex(ipv6[4] & 0xff) + ":" +
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Utils.hex(ipv6[5] >>> 8) + ":" + Utils.hex(ipv6[6] & 0xff) + ":" +
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Utils.hex(ipv6[7] >>> 8) + ":" + Utils.hex(ipv6[7] & 0xff);
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output += "\nInterface identifier: " + intIdent +
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"\nMAC address: " + mac;
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}
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} else {
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return "Invalid IPv6 address";
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}
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