PREPARE
PREPARE(keybase " " label, keyname, keywords); \
PREPARE("source-address both", "sourceaddr", "from=\"127.0.0.1\"");
PREPARE("source-address none", "all_permit", "");
PREPARE("source-address keys", "all_permit", "from=\"127.0.0.1\"");
PREPARE("source-address cert", "sourceaddr", "");
PREPARE("force-command both", "force_command", "command=\"foo\"");
PREPARE("force-command none", "all_permit", "");
PREPARE("force-command keys", "all_permit", "command=\"bar\"");
PREPARE("force-command cert", "force_command", "");
PREPARE("force-command mismatch", "force_command", "command=\"bar\"");
PREPARE("tunnel", "all_permit", "tunnel=\"6\"");
PREPARE("permitopen", "all_permit",
PREPARE("environment", "all_permit",