diff --git a/backport-json-fix-base-chain-output.patch b/backport-json-fix-base-chain-output.patch
new file mode 100644
index 0000000..96093fd
--- /dev/null
+++ b/backport-json-fix-base-chain-output.patch
@@ -0,0 +1,34 @@
+From 790889957b48f4d28dc1699bd6c193617f2141b3 Mon Sep 17 00:00:00 2001
+From: Florian Westphal <fw@strlen.de>
+Date: Wed, 2 Jun 2021 12:47:24 +0200
+Subject: json: fix base chain output
+
+nft-test.py -j fails with
+python: json.c:243: chain_print_json: Assertion `__out' failed.
+
+The member was changed from char * to a struct, pass the name again.
+
+Fixes: 5008798157e2114f ("libnftables: location-based error reporting for chain type")
+Signed-off-by: Florian Westphal <fw@strlen.de>
+(cherry picked from commit cabe8992b3ee4eb0001a07075b317d966df6bcbd)
+---
+ src/json.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+(limited to 'src/json.c')
+
+diff --git a/src/json.c b/src/json.c
+index a3d1008f..e588ef4c 100644
+--- a/src/json.c
++++ b/src/json.c
+@@ -241,7 +241,7 @@ static json_t *chain_print_json(const struct chain *chain)
+ 		mpz_export_data(&policy, chain->policy->value,
+ 				BYTEORDER_HOST_ENDIAN, sizeof(int));
+ 		tmp = json_pack("{s:s, s:s, s:i, s:s}",
+-				"type", chain->type,
++				"type", chain->type.str,
+ 				"hook", hooknum2str(chain->handle.family,
+ 						    chain->hook.num),
+ 				"prio", priority,
+-- 
+cgit v1.2.3
diff --git a/nftables.spec b/nftables.spec
index 21a6ae5..f3e39bb 100644
--- a/nftables.spec
+++ b/nftables.spec
@@ -1,6 +1,6 @@
 Name:           nftables
 Version:        0.9.9
-Release:        1
+Release:        2
 Epoch:          1
 Summary:        A subsystem of the Linux kernel processing network data
 License:        GPLv2
@@ -8,6 +8,7 @@ URL:            https://netfilter.org/projects/nftables/
 Source0:        http://ftp.netfilter.org/pub/nftables/nftables-%{version}.tar.bz2
 Source1:        nftables.service
 Source2:        nftables.conf
+Patch0:         backport-json-fix-base-chain-output.patch
 
 BuildRequires:  gcc flex bison libmnl-devel gmp-devel readline-devel libnftnl-devel docbook2X systemd
 BuildRequires:  iptables-devel jansson-devel python3-devel
@@ -34,7 +35,7 @@ Requires:       %{name} = %{epoch}:%{version}-%{release}
 The nftables python module providing an interface to libnftables via ctypes.
 
 %prep
-%autosetup -n %{name}-%{version}
+%autosetup -n %{name}-%{version} -p1
 
 %build
 %configure --disable-silent-rules --with-xtables --with-json \
@@ -95,6 +96,9 @@ mv $RPM_BUILD_ROOT/%{_datadir}/nftables/*.nft $RPM_BUILD_ROOT/%{_sysconfdir}/nft
 %{python3_sitelib}/nftables/
 
 %changelog
+* Tue Aug 24 2021 gaihuiying <gaihuiying1@huawei.com> - 1:0.9.9-2
+- json: fix base chain output 
+
 * Fri Jul 23 2021 gaihuiying <gaihuiying1@huawei.com> - 1:0.9.9-1
 - update to 0.9.9