snet: SCIONPacketConn.ReadFrom - Don't fail on nil argument (#3282)

scionproto · Oct 28, 2019 · 622b3b2 · 622b3b2
1 parent f95f51c
commit 622b3b2
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/go/lib/snet/packet_conn.go b/go/lib/snet/packet_conn.go
@@ -245,7 +245,9 @@ func (c *SCIONPacketConn) readFrom(pkt *SCIONPacket, ov *overlay.OverlayAddr) er
 	pkt.Extensions = append(pkt.Extensions, scnPkt.E2EExt...)
 	pkt.L4Header = scnPkt.L4
 	pkt.Payload = scnPkt.Pld
-	*ov = *lastHop
+	if ov != nil {
+		*ov = *lastHop
+	}
 	return nil
 }