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IPCALC(1)										IPCALC(1)

NAME
       ipcalc - perform simple manipulation of IP addresses

SYNOPSIS
       ipcalc [OPTION]... <IP address>[/prefix] [netmask]

DESCRIPTION
       ipcalc  provides a simple way to calculate IP information for a host.  The various options
       specify what information ipcalc should display on standard out. Multiple  options  may  be
       specified.   An	IP  address to operate on must always be specified.  Most operations also
       require a netmask or a CIDR prefix as well.

OPTIONS
       -c, --check
	      Validate the IP address under the specified family.  If no address family is
	      specified, IPv4 is assumed.

       -4, --ipv4
	      Specify IPv4 address family (default).

       -6, --ipv6
	      Specify IPv6 address family.

       -b, --broadcast
	      Display the broadcast address for the given IP address and netmask.

       -h, --hostname
	      Display the hostname for the given IP address.

       -m, --netmask
	      Calculate  the  netmask  for  the  given	IP address. It assumes that the IP
	      address is in a complete class A, B, or C network. Many networks do not  use
	      the default netmasks, in which case an inappropriate value will be returned.

       -p, --prefix
	      Show the prefix for the given mask/IP address.

       -n, --network
	      Display the network address for the given IP address and netmask.

       -s, --silent
	      Don't ever display error messages.

AUTHORS
       Erik Troan <ewt@redhat.com>
       Preston Brown <pbrown@redhat.com>

       IPv6 supported wedged in by David Cantrell <dcantrell@redhat.com>

REPORTING BUGS
       Report bugs at http://bugzilla.redhat.com/

COPYRIGHT
       Copyright (C) 1997-2008 Red Hat, Inc.
       This  is  free  software;  see the source for copying conditions.  There is NO war-
       ranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Red Hat, Inc.				  April 30 2001 				IPCALC(1)
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