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-.TH IPSEC_ANYADDR 3 "28 Nov 2000"
-.\" RCSID $Id: sameaddr.3,v 1.1 2004/03/15 20:35:26 as Exp $
-.SH NAME
-ipsec sameaddr \- are two addresses the same?
-.br
-ipsec addrcmp \- ordered comparison of addresses
-.br
-ipsec samesubnet \- are two subnets the same?
-.br
-ipsec addrinsubnet \- is an address within a subnet?
-.br
-ipsec subnetinsubnet \- is a subnet within another subnet?
-.br
-ipsec subnetishost \- is a subnet a single host?
-.br
-ipsec samesaid \- are two SA IDs the same?
-.br
-ipsec sameaddrtype \- are two addresses of the same address family?
-.br
-ipsec samesubnettype \- are two subnets of the same address family?
-.SH SYNOPSIS
-.B "#include <freeswan.h>
-.sp
-.B "int sameaddr(const ip_address *a, const ip_address *b);"
-.br
-.B "int addrcmp(const ip_address *a, const ip_address *b);"
-.br
-.B "int samesubnet(const ip_subnet *a, const ip_subnet *b);"
-.br
-.B "int addrinsubnet(const ip_address *a, const ip_subnet *s);"
-.br
-.B "int subnetinsubnet(const ip_subnet *a, const ip_subnet *b);"
-.br
-.B "int subnetishost(const ip_subnet *s);"
-.br
-.B "int samesaid(const ip_said *a, const ip_said *b);"
-.br
-.B "int sameaddrtype(const ip_address *a, const ip_address *b);"
-.br
-.B "int samesubnettype(const ip_subnet *a, const ip_subnet *b);"
-.SH DESCRIPTION
-These functions do various comparisons and tests on the
-.I ip_address
-type and
-.I ip_subnet
-types.
-.PP
-.I Sameaddr
-returns
-non-zero
-if addresses
-.I a
-and
-.IR b
-are identical,
-and
-.B 0
-otherwise.
-Addresses of different families are never identical.
-.PP
-.I Addrcmp
-returns
-.BR \-1 ,
-.BR 0 ,
-or
-.BR 1
-respectively
-if address
-.I a
-is less than, equal to, or greater than
-.IR b .
-If they are not of the same address family,
-they are never equal;
-the ordering reported in this case is arbitrary
-(and probably not useful) but consistent.
-.PP
-.I Samesubnet
-returns
-non-zero
-if subnets
-.I a
-and
-.IR b
-are identical,
-and
-.B 0
-otherwise.
-Subnets of different address families are never identical.
-.PP
-.I Addrinsubnet
-returns
-non-zero
-if address
-.I a
-is within subnet
-.IR s
-and
-.B 0
-otherwise.
-An address is never within a
-subnet of a different address family.
-.PP
-.I Subnetinsubnet
-returns
-non-zero
-if subnet
-.I a
-is a subset of subnet
-.IR b
-and
-.B 0
-otherwise.
-A subnet is deemed to be a subset of itself.
-A subnet is never a subset of another
-subnet if their address families differ.
-.PP
-.I Subnetishost
-returns
-non-zero
-if subnet
-.I s
-is in fact only a single host,
-and
-.B 0
-otherwise.
-.PP
-.I Samesaid
-returns
-non-zero
-if SA IDs
-.I a
-and
-.IR b
-are identical,
-and
-.B 0
-otherwise.
-.PP
-.I Sameaddrtype
-returns
-non-zero
-if addresses
-.I a
-and
-.IR b
-are of the same address family,
-and
-.B 0
-otherwise.
-.PP
-.I Samesubnettype
-returns
-non-zero
-if subnets
-.I a
-and
-.IR b
-are of the same address family,
-and
-.B 0
-otherwise.
-.SH SEE ALSO
-inet(3), ipsec_initaddr(3)
-.SH HISTORY
-Written for the FreeS/WAN project by Henry Spencer.