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🐛 Fix serial number arithmetics

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This commit is contained in:
otthorn 2021-04-15 00:35:04 +02:00
parent 88d6f38e03
commit c935fa152a
1 changed files with 3 additions and 2 deletions
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5
lib.py
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@ -87,10 +87,11 @@ def update_serial(serial, serial_bits=32):
"""Update serial number
According to RFC 1982 and Knot implementation.
SERIAL_BITS = 32 by default.
SERIAL_BITS = 32 by default, which means the serial number counter can
range from 0 to 2^32 - 1.
"""
serial = serial + 1 % 2**32
serial = (serial + 1) % 2**serial_bits
return serial