@ -324,6 +324,9 @@ def is_derived_mac(a, b):
except ValueError:
return False
if mac_a[4] != mac_b[4] or mac_a[2] != mac_b[2] or mac_a[1] != mac_b[1]:
x = list(mac_a)
x[5] += 1
x[5] %= 255