Function ifa_preferred

freebsd/net/if.c:2150–2156

* See whether new ifa is better than current one: * 1) A non-virtual one is preferred over virtual. * 2) A virtual in master state preferred over any other state. * * Used in several address selecting functions. */

 * Used in several address selecting functions.
 */
int
ifa_preferred(struct ifaddr *cur, struct ifaddr *next)
{

	return (cur->ifa_carp && (!next->ifa_carp ||
	    ((*carp_master_p)(next) && !(*carp_master_p)(cur))));
}

struct sockaddr_dl *
link_alloc_sdl(size_t size, int flags)