--- a/libknet/host.c.orig	2021-09-29 15:55:33.377260315 +0100
+++ b/libknet/host.c	2021-09-29 15:55:38.642291193 +0100
@@ -608,7 +608,7 @@ int _seq_num_lookup(struct knet_host *ho
 		_clear_cbuffers(host, seq_num);
 	}
 
-	_reclaim_old_defrag_bufs(host, seq_num);
+	_reclaim_old_defrag_bufs(host, *dst_seq_num);
 
 	if (seq_num < *dst_seq_num) {
 		seq_dist =  (SEQ_MAX - seq_num) + *dst_seq_num;