From 8988264a64dc9985303332568832b108dba3acd3 Mon Sep 17 00:00:00 2001
From: "Ondrej Zajicek (work)" <santiago@crfreenet.org>
Date: Fri, 14 Jan 2022 23:15:05 +0100
Subject: [PATCH] Netlink: Add workaround for older kernel headers

---
 sysdep/linux/netlink.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/sysdep/linux/netlink.c b/sysdep/linux/netlink.c
index 71b290fd..27b1a617 100644
--- a/sysdep/linux/netlink.c
+++ b/sysdep/linux/netlink.c
@@ -69,6 +69,10 @@
 #define RTA_ENCAP  22
 #endif
 
+#ifndef NETLINK_GET_STRICT_CHK
+#define NETLINK_GET_STRICT_CHK 12
+#endif
+
 #define krt_ipv4(p) ((p)->af == AF_INET)
 #define krt_ecmp6(p) ((p)->af == AF_INET6)