diff --git a/debian/changelog b/debian/changelog
index ab66b812d..1f51ee48a 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -3,6 +3,7 @@ linux (4.9.30-1+deb9u1) UNRELEASED; urgency=medium
   * ipv6: Check ip6_find_1stfragopt() return value properly.
   * ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()
   * ipv6: Fix leak in ipv6_gso_segment().
+  * Revert "uapi: fix linux/if.h userspace compilation errors" (see #864269)
 
  -- Ben Hutchings <ben@decadent.org.uk>  Wed, 07 Jun 2017 23:31:14 +0100
 
diff --git a/debian/patches/bugfix/all/uapi-fix-linux-if.h-userspace-compilation-errors.patch b/debian/patches/bugfix/all/uapi-fix-linux-if.h-userspace-compilation-errors.patch
deleted file mode 100644
index 697260a8c..000000000
--- a/debian/patches/bugfix/all/uapi-fix-linux-if.h-userspace-compilation-errors.patch
+++ /dev/null
@@ -1,68 +0,0 @@
-From: "Dmitry V. Levin" <ldv@altlinux.org>
-Date: Mon, 20 Feb 2017 14:58:41 +0300
-Subject: uapi: fix linux/if.h userspace compilation errors
-Origin: https://git.kernel.org/linus/2618be7dccf8739b89e1906b64bd8d551af351e6
-Bug-Debian: https://bugs.debian.org/822393
-
-Include <sys/socket.h> (guarded by ifndef __KERNEL__) to fix
-the following linux/if.h userspace compilation errors:
-
-/usr/include/linux/if.h:234:19: error: field 'ifru_addr' has incomplete type
-   struct sockaddr ifru_addr;
-/usr/include/linux/if.h:235:19: error: field 'ifru_dstaddr' has incomplete type
-   struct sockaddr ifru_dstaddr;
-/usr/include/linux/if.h:236:19: error: field 'ifru_broadaddr' has incomplete type
-   struct sockaddr ifru_broadaddr;
-/usr/include/linux/if.h:237:19: error: field 'ifru_netmask' has incomplete type
-   struct sockaddr ifru_netmask;
-/usr/include/linux/if.h:238:20: error: field 'ifru_hwaddr' has incomplete type
-   struct  sockaddr ifru_hwaddr;
-
-This also fixes userspace compilation of the following uapi headers:
-  linux/atmbr2684.h
-  linux/gsmmux.h
-  linux/if_arp.h
-  linux/if_bonding.h
-  linux/if_frad.h
-  linux/if_pppox.h
-  linux/if_tunnel.h
-  linux/netdevice.h
-  linux/route.h
-  linux/wireless.h
-
-As no uapi header provides a definition of struct sockaddr, inclusion
-of <sys/socket.h> seems to be the most conservative and the only safe
-fix available.
-
-All current users of <linux/if.h> are very likely to be including
-<sys/socket.h> already because the latter is the sole provider
-of struct sockaddr definition in libc, so adding a uapi header
-with a definition of struct sockaddr would create a potential
-conflict with <sys/socket.h>.
-
-Replacing struct sockaddr in the definition of struct ifreq with
-a different type would create a potential incompatibility with current
-users of struct ifreq who might rely on ifru_addr et al members being
-of type struct sockaddr.
-
-Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
-Signed-off-by: David S. Miller <davem@davemloft.net>
----
- include/uapi/linux/if.h | 4 ++++
- 1 file changed, 4 insertions(+)
-
-diff --git a/include/uapi/linux/if.h b/include/uapi/linux/if.h
-index 1158a043342a..259617a551f2 100644
---- a/include/uapi/linux/if.h
-+++ b/include/uapi/linux/if.h
-@@ -24,6 +24,10 @@
- #include <linux/socket.h>		/* for "struct sockaddr" et al	*/
- #include <linux/compiler.h>		/* for "__user" et al           */
- 
-+#ifndef __KERNEL__
-+#include <sys/socket.h>			/* for struct sockaddr.		*/
-+#endif
-+
- #if __UAPI_DEF_IF_IFNAMSIZ
- #define	IFNAMSIZ	16
- #endif /* __UAPI_DEF_IF_IFNAMSIZ */
diff --git a/debian/patches/series b/debian/patches/series
index 420923321..0d2184715 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -76,7 +76,6 @@ bugfix/all/fs-add-module_softdep-declarations-for-hard-coded-cr.patch
 bugfix/all/kbuild-do-not-use-hyphen-in-exported-variable-name.patch
 bugfix/all/partially-revert-usb-kconfig-using-select-for-usb_co.patch
 bugfix/all/kbuild-include-addtree-remove-quotes-before-matching-path.patch
-bugfix/all/uapi-fix-linux-if.h-userspace-compilation-errors.patch
 
 # Miscellaneous features
 features/all/netfilter-nft_ct-add-notrack-support.patch