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ADd a sample for converting mac to lla

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This commit is contained in:
Jarrod Johnson 2022-04-18 10:42:35 -04:00
parent f15802a9aa
commit f4eec09a41
1 changed files with 12 additions and 0 deletions
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misc/mac2lla.py Normal file
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def mac_to_lladdr(mac):
macpieces = []
mac = mac.replace('-', ':')
for byte in mac.split(':'):
macpieces.append(int(byte, 16))
macpieces[0] = macpieces[0] ^ 2
llapieces = [(macpieces[0] << 8) + macpieces[1], (macpieces[2] << 8) + 0xff, 0xfe00 + macpieces[3], (macpieces[4] << 8) + macpieces[5]]
return 'fe80::{:x}:{:x}:{:x}:{:x}'.format(*llapieces)
if __name__ == '__main__':
import sys
print(mac_to_lladdr(sys.argv[1]))