#define IFF_PORTSEL 0x2000
#define IFF_AUTOMEDIA 0x4000
#define IFF_DYNAMIC 0x8000
+#define IFF_LOWER_UP 0x10000
+#define IFF_DORMANT 0x20000
+#define IFF_ECHO 0x40000
+#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST| \
+ IFF_ECHO|IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
struct ifaddr {
struct sockaddr ifa_addr;