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-rw-r--r--netsniff-ng.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/netsniff-ng.c b/netsniff-ng.c
index 09dbf41..7f03d4b 100644
--- a/netsniff-ng.c
+++ b/netsniff-ng.c
@@ -6,6 +6,8 @@
*/
#define _GNU_SOURCE
+#define NEED_TCPDUMP_LIKE_FILTER
+
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>