BytesIO not StringIO

diff --git a/dns/dnssec.py b/dns/dnssec.py
index 61a06d970be937cd5ef7287f0b43b77318c03457..61f2410a32364669af880320c0430470160cdafc 100644 (file)
--- a/dns/dnssec.py
+++ b/dns/dnssec.py
@@ -89,7 +89,7 @@ def algorithm_to_text(value):
     return text
 
 def _to_rdata(record, origin):
-    s = io.StringIO()
+    s = io.BytesIO()
     record.to_wire(s, origin=origin)
     return s.getvalue()