pan: return pan error type HostNotFoundError

return pan error type HostNotFoundError in dnsResolver when no host is found

Author: FR4NK-W

pkg/pan/dns_txt.go

@@ -53,7 +53,7 @@ func queryTXTRecord(ctx context.Context, host string) (addresses []string, err e
 	var errDNSError *net.DNSError
 	if errors.As(err, &errDNSError) {
 		if errDNSError.IsNotFound {
-			return addresses, err
+			return addresses, HostNotFoundError{Host: host}
 		}
 	}
 	if err != nil {
@@ -65,7 +65,7 @@ func queryTXTRecord(ctx context.Context, host string) (addresses []string, err e
 		}
 	}
 	if len(addresses) == 0 {
-		return addresses, err
+		return addresses, HostNotFoundError{Host: host}
 	}
 	return addresses, nil
 }