# \[PATCH 66/98\] include/uapi/linux/netfilter\_bridge/ebt\_nat.h: include linux/if\_ether.h

- From: Mikko Rapeli \<hidden\>
- Date: 2015-05-30 16:24:35 
- List: linux-api
- Page: https://ratatoskr.run/linux-api/2015/05/4505589
- Thread: https://ratatoskr.run/linux-api/2015/05/4505589/t.md

```text
Fixes userspace compile error:

error: ‘ETH_ALEN’ undeclared here (not in a function)
 unsigned char mac[ETH_ALEN];

Signed-off-by: Mikko Rapeli <redacted>
---
 include/uapi/linux/netfilter_bridge/ebt_nat.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/uapi/linux/netfilter_bridge/ebt_nat.h b/include/uapi/linux/netfilter_bridge/ebt_nat.h
index 5e74e3b..c990d74 100644
--- a/include/uapi/linux/netfilter_bridge/ebt_nat.h
+++ b/include/uapi/linux/netfilter_bridge/ebt_nat.h
@@ -1,6 +1,8 @@
 #ifndef __LINUX_BRIDGE_EBT_NAT_H
 #define __LINUX_BRIDGE_EBT_NAT_H
 
+#include <linux/if_ether.h>
+
 #define NAT_ARP_BIT  (0x00000010)
 struct ebt_nat_info {
 	unsigned char mac[ETH_ALEN];
-- 
2.1.4
```