+ avl_tree_t *subnet_tree; /* Pointer to a tree of subnets belonging to this node */
+
+ avl_tree_t *edge_tree; /* Edges with this node as one of the endpoints */
+
+ struct connection_t *connection; /* Connection associated with this node (if a direct connection exists) */
+
+ uint32_t sent_seqno; /* Sequence number last sent to this node */
+ uint32_t received_seqno; /* Sequence number last received from this node */
+ unsigned char late[16]; /* Bitfield marking late packets */