diff --git a/peer/connreader.go b/peer/connreader.go
index 4c156f4..f627982 100644
--- a/peer/connreader.go
+++ b/peer/connreader.go
@@ -121,7 +121,8 @@ func (r *connReader) handleDataPacket(
 
 	if h.DestIP == r.localIP {
 		if _, err := r.iface.Write(data); err != nil {
-			log.Fatalf("Failed to write to interface: %v", err)
+			// Could be invalid data from peer. Don't crash.
+			log.Printf("Failed to write to interface: %v", err)
 		}
 		return
 	}