MPLS labels may be inserted in IPv6 source or destination IP address fields, potentially reducing network overhead bandwidth. More particularly, the invention relates to the identification, isolation, and cloning of the DNA sequence corresponding to the normal and mutant HH genes, as well as the characterization of their transcripts and gene products. The vacuum cleaner can be moved and rotated by freely moving an extension frame extending upward from the second housing in forward, backward, leftward, and rightward directions. The method then selects a base medical service rate from a plurality of medical service rates.