dns_copy_msg
struct dns_msg* dns_copy_msg(struct dns_msg* from, struct regional* regional);
foriq->deleg_msg = dns_copy_msg(qstate->return_msg, forq->region);
foriq->response = dns_copy_msg(from, forq->region);
super->return_msg = dns_copy_msg(qstate->return_msg, super->region);
struct dns_msg* dns_copy_msg(struct dns_msg* from, struct regional* regional);
foriq->deleg_msg = dns_copy_msg(qstate->return_msg, forq->region);
foriq->response = dns_copy_msg(from, forq->region);