add comment in expect_create test file

The test file requires nf_conntrack_ftp to work properly, otherwise
it returns EINVAL. This patch adds a small comment to remember users
to load the module before going ahead.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

1 files changed, 5 insertions, 0 deletions

diff --git a/utils/expect_create.c b/utils/expect_create.c
index 3890c26..b366d01 100644
--- a/utils/expect_create.c
+++ b/utils/expect_create.c
@@ -5,6 +5,11 @@
 #include <libnetfilter_conntrack/libnetfilter_conntrack.h>
 #include <libnetfilter_conntrack/libnetfilter_conntrack_tcp.h>
 
+/*
+ * WARNING: This test file creates an expectation for the FTP helper.
+ * Therefore, make sure you have load nf_conntrack_ftp before executing it. 
+ */
+
 int main()
 {
 	int ret;