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-.TH IPSEC_ANYADDR 3 "8 Sept 2000"
-.SH NAME
-ipsec anyaddr \- get "any" address
-.br
-ipsec isanyaddr \- test address for equality to "any" address
-.br
-ipsec unspecaddr \- get "unspecified" address
-.br
-ipsec isunspecaddr \- test address for equality to "unspecified" address
-.br
-ipsec loopbackaddr \- get loopback address
-.br
-ipsec isloopbackaddr \- test address for equality to loopback address
-.SH SYNOPSIS
-.B "#include <freeswan.h>
-.sp
-.B "const char *anyaddr(int af, ip_address *dst);"
-.br
-.B "int isanyaddr(const ip_address *src);"
-.br
-.B "const char *unspecaddr(int af, ip_address *dst);"
-.br
-.B "int isunspecaddr(const ip_address *src);"
-.br
-.B "const char *loopbackaddr(int af, ip_address *dst);"
-.br
-.B "int isloopbackaddr(const ip_address *src);"
-.SH DESCRIPTION
-These functions fill in, and test for, special values of the
-.I ip_address
-type.
-.PP
-.I Anyaddr
-fills in the destination
-.I *dst
-with the ``any'' address of address family
-.IR af
-(normally
-.B AF_INET
-or
-.BR AF_INET6 ).
-The IPv4 ``any'' address is the one embodied in the old
-.B INADDR_ANY
-macro.
-.PP
-.I Isanyaddr
-returns
-.B 1
-if the
-.I src
-address equals the ``any'' address,
-and
-.B 0
-otherwise.
-.PP
-Similarly,
-.I unspecaddr
-supplies, and
-.I isunspecaddr
-tests for,
-the ``unspecified'' address,
-which may be the same as the ``any'' address.
-.PP
-Similarly,
-.I loopbackaddr
-supplies, and
-.I islookbackaddr
-tests for,
-the loopback address.
-.PP
-.IR Anyaddr ,
-.IR unspecaddr ,
-and
-.I loopbackaddr
-return
-.B NULL
-for success and
-a pointer to a string-literal error message for failure;
-see DIAGNOSTICS.
-.SH SEE ALSO
-inet(3), ipsec_addrtot(3), ipsec_sameaddr(3)
-.SH DIAGNOSTICS
-Fatal errors in the address-supplying functions are:
-unknown address family.
-.SH HISTORY
-Written for the FreeS/WAN project by Henry Spencer.