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HAN WANG thinks this is interesting:
In this case, we can see a special tunneling interface called ISATAP [RFC5214]. The so-called physical address is really the hexadecimal encoding of an IPv4 address: 0A-99-8D-87
is the same as 10.153.141.135
. Here, the OUI used (00-00-5E
) is the one assigned to the IANA [IANA]. It is used in combination with the hex value fe
, indicating an embedded IPv4 address. This combination is then combined with the standard link-local prefix fe80::/10
to give the address fe80::5efe:10.153.141.135
.
Minimise