nsec3_condition_dshash
!nsec3_condition_dshash(domain, zone)) {
&& nsec3_condition_dshash(domain, zone)) {
if(nsec3_condition_dshash(walk, zone)) {
if(nsec3_condition_dshash(walk, zone)) {
if(nsec3_condition_dshash(walk, zone))
int nsec3_condition_dshash(struct domain* d, struct zone* z);