[阅读: 453] 2006-05-31 07:04:33
CIDR-ADDRESS specifies the set of hosts the record matches.
32 # It is made up of an IP address and a CIDR mask that is an integer
33 # (between 0 and 32 (IPv4) or 128 (IPv6) inclusive) that specifies
34 # the number of significant bits in the mask. Alternatively, you can write
35 # an IP address and netmask in separate columns to specify the set of hosts.
36 #
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