struct ipovly ui_i; /* overlaid ip structure */
struct udphdr ui_u; /* udp header */
};
-#define ui_next ui_i.ih_next
-#define ui_prev ui_i.ih_prev
+#define ui_mbuf ui_i.ih_mbuf.mptr
#define ui_x1 ui_i.ih_x1
#define ui_pr ui_i.ih_pr
#define ui_len ui_i.ih_len