edns_known_options_init
if(!edns_known_options_init(ctx->env)) {
int edns_known_options_init(struct module_env* env);
if(!edns_known_options_init(daemon->env)) {
if(!edns_known_options_init(ctx->env)) {
if(!edns_known_options_init(&env))
int edns_known_options_init(struct module_env* env);