add libip

src/libip/myipaddr.c

@@ -0,0 +1,21 @@
+#include <u.h>
+#include <libc.h>
+#include <ip.h>
+
+int
+myipaddr(uchar *ip, char *net)
+{
+	Ipifc *nifc;
+	Iplifc *lifc;
+	static Ipifc *ifc;
+
+	ifc = readipifc(net, ifc, -1);
+	for(nifc = ifc; nifc; nifc = nifc->next)
+		for(lifc = nifc->lifc; lifc; lifc = lifc->next)
+			if(ipcmp(lifc->ip, IPnoaddr) != 0){
+				ipmove(ip, lifc->ip);
+				return 0;
+			}
+	ipmove(ip, IPnoaddr);
+	return -1;
+}