diff --git a/core/rtw_br_ext.c b/core/rtw_br_ext.c
index 88a517a..9c4ad22 100644
--- a/core/rtw_br_ext.c
+++ b/core/rtw_br_ext.c
@@ -22,7 +22,12 @@
 #ifdef __KERNEL__
 #include <linux/if_arp.h>
 #include <net/ip.h>
-#include <net/ipx.h>
+
+#include <linux/version.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
+  #include <net/ipx.h>
+#endif
+
 #include <linux/atalk.h>
 #include <linux/udp.h>
 #include <linux/if_pppox.h>
@@ -170,6 +175,7 @@ static __inline__ void __nat25_generate_ipv4_network_addr(unsigned char *network
 }
 
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
 static __inline__ void __nat25_generate_ipx_network_addr_with_node(unsigned char *networkAddr,
 				unsigned int *ipxNetAddr, unsigned char *ipxNodeAddr)
 {
@@ -179,8 +185,10 @@ static __inline__ void __nat25_generate_ipx_network_addr_with_node(unsigned char
 	memcpy(networkAddr+1, (unsigned char *)ipxNetAddr, 4);
 	memcpy(networkAddr+5, ipxNodeAddr, 6);
 }
+#endif
 
 
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
 static __inline__ void __nat25_generate_ipx_network_addr_with_socket(unsigned char *networkAddr,
 				unsigned int *ipxNetAddr, unsigned short *ipxSocketAddr)
 {
@@ -190,6 +198,7 @@ static __inline__ void __nat25_generate_ipx_network_addr_with_socket(unsigned ch
 	memcpy(networkAddr+1, (unsigned char *)ipxNetAddr, 4);
 	memcpy(networkAddr+5, (unsigned char *)ipxSocketAddr, 2);
 }
+#endif
 
 
 static __inline__ void __nat25_generate_apple_network_addr(unsigned char *networkAddr,
@@ -930,6 +939,7 @@ int nat25_db_handle(_adapter *priv, struct sk_buff *skb, int method)
 	/*---------------------------------------------------*/
 	/*         Handle IPX and Apple Talk frame           */
 	/*---------------------------------------------------*/
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
 	else if((protocol == __constant_htons(ETH_P_IPX)) ||
 		(protocol <= __constant_htons(ETH_FRAME_LEN)))
 	{
@@ -1190,6 +1200,7 @@ int nat25_db_handle(_adapter *priv, struct sk_buff *skb, int method)
 
 		return -1;
 	}
+#endif
 
 	/*---------------------------------------------------*/
 	/*                Handle PPPoE frame                 */