add libip

src/libip/testreadipifc.c

@@ -0,0 +1,21 @@
+#include <u.h>
+#include <libc.h>
+#include <ip.h>
+
+void
+main(void)
+{
+	Ipifc *ifc, *list;
+	Iplifc *lifc;
+	int i;
+
+	fmtinstall('I', eipfmt);
+	fmtinstall('M', eipfmt);
+
+	list = readipifc("/net", nil, -1);
+	for(ifc = list; ifc; ifc = ifc->next){
+		print("ipifc %s %d\n", ifc->dev, ifc->mtu);
+		for(lifc = ifc->lifc; lifc; lifc = lifc->next)
+			print("\t%I %M %I\n", lifc->ip, lifc->mask, lifc->net);
+	}
+}