ipf_rx_attach_mask
static void ipf_rx_attach_mask(ipf_rdx_node_t *, ipf_rdx_mask_t *);
ipf_rx_attach_mask(&nodes[0], mask);
ipf_rx_attach_mask(&nodes[0], mask);
ipf_rx_attach_mask(parent->right, m);
ipf_rx_attach_mask(parent->left, m);