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From 51d374ba41ae4f1bb851228c06b030b83dd2092f Mon Sep 17 00:00:00 2001
From: Baruch Siach <baruch@tkos.co.il>
Date: Tue, 13 Nov 2018 19:22:08 +0200
Subject: [PATCH] ebtables: vlan: fix userspace/kernel headers collision

Build with musl libc fails because of conflicting struct ethhdr
definitions:

In file included from .../sysroot/usr/include/net/ethernet.h:10:0,
                 from ../iptables/nft-bridge.h:8,
                 from libebt_vlan.c:18:
.../sysroot/usr/include/netinet/if_ether.h:107:8: error: redefinition of ‘struct ethhdr’
 struct ethhdr {
        ^~~~~~
In file included from libebt_vlan.c:16:0:
.../sysroot/usr/include/linux/if_ether.h:160:8: note: originally defined here
 struct ethhdr {
        ^~~~~~

Include the userspace header first for the definition suppression logic
to do the right thing.

Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
Upstream status: commit 51d374ba41ae

 extensions/libebt_vlan.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/extensions/libebt_vlan.c b/extensions/libebt_vlan.c
index 4a2eb7126895..be269c6cdb4c 100644
--- a/extensions/libebt_vlan.c
+++ b/extensions/libebt_vlan.c
@@ -12,6 +12,7 @@
 #include <getopt.h>
 #include <ctype.h>
 #include <xtables.h>
+#include <netinet/if_ether.h>
 #include <linux/netfilter_bridge/ebt_vlan.h>
 #include <linux/if_ether.h>
 #include "iptables/nft.h"
-- 
2.19.1