unsigned groups, struct nlmsghdr *answer,
rtnl_filter_t junk,
void *jarg);
-extern int rtnl_send(struct rtnl_handle *rth, const char *buf, int);
-extern int rtnl_send_check(struct rtnl_handle *rth, const char *buf, int);
+extern int rtnl_send(struct rtnl_handle *rth, const void *buf, int);
+extern int rtnl_send_check(struct rtnl_handle *rth, const void *buf, int);
extern int addattr32(struct nlmsghdr *n, int maxlen, int type, __u32 data);
extern int addattr_l(struct nlmsghdr *n, int maxlen, int type, const void *data, int alen);