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-rw-r--r--sys/netinet/ip_gre.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/netinet/ip_gre.c b/sys/netinet/ip_gre.c
index 776820f5db81..e4a84ceac963 100644
--- a/sys/netinet/ip_gre.c
+++ b/sys/netinet/ip_gre.c
@@ -57,6 +57,7 @@ __FBSDID("$FreeBSD$");
#include <net/bpf.h>
#include <net/ethernet.h>
#include <net/if.h>
+#include <net/if_var.h>
#include <net/netisr.h>
#include <net/route.h>
#include <net/raw_cb.h>