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AIX Version 4.3 Kernel and Subsystems Technical Reference, Volume 1

ifa_ifwithdstaddr Kernel Service


Locates the point-to-point interface with a given destination address.


#include <sys/types.h>
#include <sys/errno.h>
#include <sys/socket.h>
#include <net/if.h>
struct ifaddr * ifa_ifwithdstaddr (addr)
struct sockaddr *addr;


addr Specifies a destination address.


The ifa_ifwithdstaddr kernel service searches the list of point-to-point addresses per interface and locates the connection with the destination address specified by the addr parameter.

Execution Environment

The ifa_withdstaddr kernel service can be called from either the process or interrupt environment.

Return Values

If successful, the ifa_ifwithdstaddr service returns the corresponding ifaddr structure associated with the point-to-point interface. If no interface is found, the ifa_ifwithdstaddr service returns a null pointer.


To locate the point-to-point interface with a given destination address, invoke the ifa_ifwithdstaddr kernel service as follows:

ifa_ifwithdstaddr((struct sockaddr *)&ipaddr);

Implementation Specifics

The ifa_ifwithdstaddr kernel service is part of Base Operating System (BOS) Runtime.

Related Information

The ifa_ifwithaddr kernel service, ifa_ifwithnet kernel service.

Network Kernel Services in AIX Kernel Extensions and Device Support Programming Concepts.

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