DNS
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... Unfortunately, the arithmetic defined in [IEN-74] is not adequate for
the purposes of the DNS, as no general comparison operator is
defined.
...
...
As this defined arithmetic may be useful for purposes other than for
the DNS serial number, it may be referenced as Serial Number
...
... The DNS SOA serial number ...
... be set to the value zero. While this value is not in any way special
in serial number arithmetic, or to the DNS SOA serial number, many
DNS ...
... DNS SOA serial number, many
DNS implementations have incorrectly treated zero as a special case,
with special properties, and unusual behaviour may be expected if
zero is used as a DNS ...
... DNS implementations have incorrectly treated zero as a special case,
with special properties, and unusual behaviour may be expected if
zero is used as a DNS SOA serial number.
...
... It is not believed that anything in this document adds to any
security issues that may exist with the DNS, nor does it do anything
to lessen them.
...