<s> from nova import flags <EOL> from nova import utils <EOL> FLAGS = flags . FLAGS <EOL> flags . DEFINE_string ( '<STR_LIT>' , <EOL> '<STR_LIT>' , <EOL> '<STR_LIT>' ) <EOL> def reset_backend ( ) : <EOL> global IMPL <EOL> IMPL = utils . LazyPluggable ( FLAGS [ '<STR_LIT>' ] , <EOL> rfc2462 = '<STR_LIT>' , <EOL> account_identifier = '<STR_LIT>' ) <EOL> def to_global ( prefix , mac , project_id ) : <EOL> return IMPL . to_global ( prefix , mac , project_id ) <EOL> def to_mac ( ipv6_address ) : <EOL> return IMPL . to_mac ( ipv6_address ) <EOL> reset_backend ( ) </s>
