diff -rupN wireguard-linux-compat.orig/src/compat/compat.h wireguard-linux-compat/src/compat/compat.h
--- wireguard-linux-compat.orig/src/compat/compat.h	2022-05-18 13:48:16.173696186 +0000
+++ wireguard-linux-compat/src/compat/compat.h	2022-05-18 13:54:54.027438354 +0000
@@ -414,16 +414,6 @@ static inline u64 __compat_jiffies64_to_
 }
 #define jiffies64_to_nsecs __compat_jiffies64_to_nsecs
 #endif
-static inline u64 ktime_get_coarse_boottime_ns(void)
-{
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3, 17, 0)
-	return ktime_to_ns(ktime_get_boottime());
-#elif (LINUX_VERSION_CODE < KERNEL_VERSION(5, 1, 12) && LINUX_VERSION_CODE >= KERNEL_VERSION(4, 20, 0)) || LINUX_VERSION_CODE < KERNEL_VERSION(4, 19, 53)
-	return ktime_to_ns(ktime_mono_to_any(ns_to_ktime(jiffies64_to_nsecs(get_jiffies_64())), TK_OFFS_BOOT));
-#else
-	return ktime_to_ns(ktime_get_coarse_boottime());
-#endif
-}
 #endif
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(3, 14, 0)
@@ -1080,29 +1070,8 @@ static inline void skb_reset_redirect(st
 #define pre_exit exit
 #endif
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(5, 8, 0)
-#include <linux/skbuff.h>
-#include <linux/ip.h>
-#include <linux/ipv6.h>
-static inline __be16 ip_tunnel_parse_protocol(const struct sk_buff *skb)
-{
-	if (skb_network_header(skb) >= skb->head &&
-	    (skb_network_header(skb) + sizeof(struct iphdr)) <= skb_tail_pointer(skb) &&
-	    ip_hdr(skb)->version == 4)
-		return htons(ETH_P_IP);
-	if (skb_network_header(skb) >= skb->head &&
-	    (skb_network_header(skb) + sizeof(struct ipv6hdr)) <= skb_tail_pointer(skb) &&
-	    ipv6_hdr(skb)->version == 6)
-		return htons(ETH_P_IPV6);
-	return 0;
-}
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(5, 1, 0) || defined(ISRHEL8)
-static const struct header_ops ip_tunnel_header_ops = { .parse_protocol = ip_tunnel_parse_protocol };
-#else
 #define header_ops hard_header_len
 #define ip_tunnel_header_ops *(char *)0 - (char *)0
-#endif
-#endif
 
 #if LINUX_VERSION_CODE < KERNEL_VERSION(5, 9, 0)
 #define kfree_sensitive(a) kzfree(a)