u8 *format_bfd_auth_key (u8 * s, va_list * args);
void bfd_session_set_flags (bfd_session_t * bs, u8 admin_up_down);
unsigned bfd_auth_type_supported (bfd_auth_type_e auth_type);
u8 *format_bfd_auth_key (u8 * s, va_list * args);
void bfd_session_set_flags (bfd_session_t * bs, u8 admin_up_down);
unsigned bfd_auth_type_supported (bfd_auth_type_e auth_type);