add libip
diff --git a/src/libip/bo.c b/src/libip/bo.c
new file mode 100644
index 0000000..54675d8
--- /dev/null
+++ b/src/libip/bo.c
@@ -0,0 +1,44 @@
+#include <u.h>
+#include <libc.h>
+#include <ip.h>
+
+
+void
+hnputl(void *p, uint v)
+{
+ uchar *a;
+
+ a = p;
+ a[0] = v>>24;
+ a[1] = v>>16;
+ a[2] = v>>8;
+ a[3] = v;
+}
+
+void
+hnputs(void *p, ushort v)
+{
+ uchar *a;
+
+ a = p;
+ a[0] = v>>8;
+ a[1] = v;
+}
+
+uint
+nhgetl(void *p)
+{
+ uchar *a;
+
+ a = p;
+ return (a[0]<<24)|(a[1]<<16)|(a[2]<<8)|(a[3]<<0);
+}
+
+ushort
+nhgets(void *p)
+{
+ uchar *a;
+
+ a = p;
+ return (a[0]<<8)|(a[1]<<0);
+}
