Fixed sending SOA for records in hosts files.

src/dns/hosts.rs

@@ -68,13 +68,11 @@ impl DnsFilter for HostsFilter {
                 }
             }
 
-            if !packet.answers.is_empty() {
             packet.header.authoritative_answer = true;
             packet.questions.push(DnsQuestion::new(String::from(qname), qtype));
             packet.authorities.push(DnsRecord::NS { domain: String::from("hosts"), host: String::from(NAME_SERVER), ttl: TransientTtl(600) });
             return Some(packet);
         }
-        }
 
         None
     }