Work on join

FossilOrigin-Name: 49cdffd359bed4d93919d0f97aaf32806bef625405399f493ca5792b05122bca

src/cw/conn_process_packet.c

@@ -276,7 +276,7 @@ static int process_elements(struct conn *conn, uint8_t * rawmsg, int len,
 			errno = EAGAIN;
 			return -1;
 		}
-		
+		conn->cmod->setup_cfg(conn);
 		conn->msgset= set;
 		conn->detected = 1;
 	}