From d5818134bdeeb6beb7380f8d67a029020e433f15 Mon Sep 17 00:00:00 2001
From: Marcel Holtmann <marcel@holtmann.org>
Date: Tue, 10 Feb 2026 17:12:02 +0100
Subject: [PATCH] wired: Fix build issue with missing _GNU_SOURCE
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  CC       wired/ethdev.o
wired/ethdev.c: In function ‘pae_open’:
wired/ethdev.c:331:40: error: ‘SO_ATTACH_FILTER’ undeclared (first use in this function)
  331 |         if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER,
      |                                        ^~~~~~~~~~~~~~~~
wired/ethdev.c:331:40: note: each undeclared identifier is reported only once for each function it appears in
---
 wired/ethdev.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/wired/ethdev.c b/wired/ethdev.c
index ed128006..29ea6264 100644
--- a/wired/ethdev.c
+++ b/wired/ethdev.c
@@ -24,6 +24,7 @@
 #include <config.h>
 #endif
 
+#define _GNU_SOURCE
 #include <stdio.h>
 #include <errno.h>
 #include <unistd.h>