24 lines
593 B
Python
24 lines
593 B
Python
def link_local(mac: str) -> str:
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"""
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Convert MAC to IPv6 Link-local address
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:param mac: MAC address
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:type mac: str
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:return: IPv6 Link-local address
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:rtype: str
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"""
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# only accept MACs separated by a colon
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parts = mac.split(":")
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# modify parts to match IPv6 value
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parts.insert(3, "ff")
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parts.insert(4, "fe")
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parts[0] = "%x" % (int(parts[0], 16) ^ 2)
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# format output
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ipv6_parts = []
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for i in range(0, len(parts), 2):
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ipv6_parts.append("".join(parts[i:i+2]))
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ipv6 = "fe80::%s" % (":".join(ipv6_parts))
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return ipv6
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