Name
getnetbyaddr
Synopsis
getnetbyaddr address, [addrtype]
Retrieves the network name or names of the given
network address.
(addrtype indicates the type of
address. Often, this function is used for IP addresses, in which
the type is not needed.) The return value in list context
is:
($name, $aliases, $addrtype, $net)
In scalar context, getnetbyaddr returns only the network
name.
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