const char * ll_type_n2a(int type, char *buf, int len);
const char *ll_addr_n2a(unsigned char *addr, int alen, int type, char *buf, int blen);
-int ll_addr_a2n(unsigned char *lladdr, int len, char *arg);
+int ll_addr_a2n(char *lladdr, int len, char *arg);
const char * ll_proto_n2a(unsigned short id, char *buf, int len);
int ll_proto_a2n(unsigned short *id, char *buf);