centos man page for ipsec_isunspecaddr

IPSEC_ANYADDR(3)					     Library Functions Manual						  IPSEC_ANYADDR(3)

NAME
       ipsec_anyaddr, ipsec_isanyaddr, ipsec_unspecaddr, ipsec_isunspecaddr, ipsec_loopbackaddr, ipsec_isloopbackaddr - get and test for addresses
       of type "any", "unspecified" and loopback get "any" address

SYNOPSIS
       #include <libreswan.h>

       const char *anyaddr(int af, ip_address *dst);
       int isanyaddr(const ip_address *src);
       const char *unspecaddr(int af, ip_address *dst);
       int isunspecaddr(const ip_address *src);
       const char *loopbackaddr(int af, ip_address *dst);
       int isloopbackaddr(const ip_address *src);

DESCRIPTION
       These functions fill in, and test for, special values of the ip_address type.

       Anyaddr fills in the destination *dst with the ``any'' address of address family af (normally  AF_INET  or  AF_INET6).	The  IPv4  ``any''
       address is the one embodied in the old INADDR_ANY macro.

       Isanyaddr returns 1 if the src address equals the ``any'' address, and 0 otherwise.

       Similarly, unspecaddr supplies, and isunspecaddr tests for, the ``unspecified'' address, which may be the same as the ``any'' address.

       Similarly, loopbackaddr supplies, and islookbackaddr tests for, the loopback address.

       Anyaddr, unspecaddr, and loopbackaddr return NULL for success and a pointer to a string-literal error message for failure; see DIAGNOSTICS.

SEE ALSO
       inet(3), ipsec_addrtot(3), ipsec_sameaddr(3)

DIAGNOSTICS
       Fatal errors in the address-supplying functions are: unknown address family.

HISTORY
       Written for the FreeS/WAN project by Henry Spencer.

								    8 Sept 2000 						  IPSEC_ANYADDR(3)