diff -Nru rtl8812au-4.3.8.12175.20140902+dfsg/debian/changelog rtl8812au-4.3.8.12175.20140902+dfsg/debian/changelog
--- rtl8812au-4.3.8.12175.20140902+dfsg/debian/changelog	2021-06-24 17:42:57.000000000 +0000
+++ rtl8812au-4.3.8.12175.20140902+dfsg/debian/changelog	2022-02-06 18:06:19.000000000 +0000
@@ -1,3 +1,10 @@
+rtl8812au (4.3.8.12175.20140902+dfsg-0ubuntu14~20.04.3) focal; urgency=medium
+
+  * Support linux 5.15: (LP: #1960169)
+    - debian/patches/0020-drop-ipx-and-apple-talk-support.patch
+
+ -- Andrea Righi <andrea.righi@canonical.com>  Sun, 06 Feb 2022 18:06:19 +0000
+
 rtl8812au (4.3.8.12175.20140902+dfsg-0ubuntu13~20.04.3) focal; urgency=medium
 
   * Backported from Hirsute 4.3.8.12175.20140902+dfsg-0ubuntu14 (LP: #1932169)
diff -Nru rtl8812au-4.3.8.12175.20140902+dfsg/debian/patches/0020-drop-ipx-and-apple-talk-support.patch rtl8812au-4.3.8.12175.20140902+dfsg/debian/patches/0020-drop-ipx-and-apple-talk-support.patch
--- rtl8812au-4.3.8.12175.20140902+dfsg/debian/patches/0020-drop-ipx-and-apple-talk-support.patch	1970-01-01 00:00:00.000000000 +0000
+++ rtl8812au-4.3.8.12175.20140902+dfsg/debian/patches/0020-drop-ipx-and-apple-talk-support.patch	2022-02-06 18:06:11.000000000 +0000
@@ -0,0 +1,44 @@
+Subject: drop IPX and AppleTalk on linux 5.15
+Author: Andrea Righi <andrea.righi@canonical.com>
+
+Index: rtl8812au-4.3.8.12175.20140902+dfsg/core/rtw_br_ext.c
+===================================================================
+--- rtl8812au-4.3.8.12175.20140902+dfsg.orig/core/rtw_br_ext.c
++++ rtl8812au-4.3.8.12175.20140902+dfsg/core/rtw_br_ext.c
+@@ -22,7 +22,6 @@
+ #ifdef __KERNEL__
+ #include <linux/if_arp.h>
+ #include <net/ip.h>
+-#include <net/ipx.h>
+ #include <linux/atalk.h>
+ #include <linux/udp.h>
+ #include <linux/if_pppox.h>
+@@ -56,6 +55,12 @@
+ #endif
+ #endif
+ 
++#ifdef __KERNEL__
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
++#include <net/ipx.h>
++#endif
++#endif
++
+ #ifdef CONFIG_BR_EXT
+ 
+ //#define BR_EXT_DEBUG
+@@ -931,6 +936,7 @@ int nat25_db_handle(_adapter *priv, stru
+ 		}
+ 	}
+ 
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(5, 15, 0))
+ 	/*---------------------------------------------------*/
+ 	/*         Handle IPX and Apple Talk frame           */
+ 	/*---------------------------------------------------*/
+@@ -1191,6 +1197,7 @@ int nat25_db_handle(_adapter *priv, stru
+ 
+ 		return -1;
+ 	}
++#endif
+ 
+ 	/*---------------------------------------------------*/
+ 	/*                Handle PPPoE frame                 */
diff -Nru rtl8812au-4.3.8.12175.20140902+dfsg/debian/patches/series rtl8812au-4.3.8.12175.20140902+dfsg/debian/patches/series
--- rtl8812au-4.3.8.12175.20140902+dfsg/debian/patches/series	2021-06-24 17:42:57.000000000 +0000
+++ rtl8812au-4.3.8.12175.20140902+dfsg/debian/patches/series	2022-02-06 18:06:11.000000000 +0000
@@ -25,3 +25,4 @@
 5.8-kernel-compatibility.patch
 LINUX-5.8-rename-struct-sha256-to-rtl_sha256-and-ret.patch
 0001-switch-readFile-writeFile-to-kernel_read-kernel_writ.patch
+0020-drop-ipx-and-apple-talk-support.patch