diff --git a/0001-rdnss-fix-signedness-warning.patch b/0001-rdnss-fix-signedness-warning.patch
new file mode 100644
index 0000000000000000000000000000000000000000..ddb0a309aa859b4ec1462f4a8377b4f134ff60c3
--- /dev/null
+++ b/0001-rdnss-fix-signedness-warning.patch
@@ -0,0 +1,26 @@
+From d3b542acea6d3f63a1b70a63a0e21546f6de265f Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?R=C3=A9mi=20Denis-Courmont?= <remi@remlab.net>
+Date: Tue, 12 Nov 2019 17:53:05 +0200
+Subject: [PATCH] rdnss: fix signedness warning
+
+---
+ rdnss/rdnssd.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/rdnss/rdnssd.c b/rdnss/rdnssd.c
+index d92025c..4c087bf 100644
+--- a/rdnss/rdnssd.c
++++ b/rdnss/rdnssd.c
+@@ -385,7 +385,8 @@ int parse_nd_opts (const struct nd_opt_hdr *opt, size_t opts_len, unsigned int i
+ 	     opt = (const struct nd_opt_hdr *)
+ 		   ((const uint8_t *) opt + (opt->nd_opt_len << 3))) {
+ 
+-		if (opt->nd_opt_len == 0 || opts_len < (opt->nd_opt_len << 3))
++		if (opt->nd_opt_len == 0
++		 || opts_len < ((size_t)opt->nd_opt_len << 3))
+ 			return -1;
+ 
+ 		switch (opt->nd_opt_type)
+-- 
+2.33.0
+
diff --git a/ndisc6.spec b/ndisc6.spec
index 849cec2e213a55cb57b6d52ed2526bb22358add4..f2d42e9205dd7bbe854e4ccfc8fed7667901ba50 100644
--- a/ndisc6.spec
+++ b/ndisc6.spec
@@ -1,6 +1,6 @@
 Name:		ndisc6
 Version:	1.0.4
-Release:	7
+Release:	8
 Summary:	IPv6 diagnostic tools
 License:	GPLv2 or GPLv3
 URL:		http://www.remlab.net/ndisc6
@@ -11,6 +11,7 @@ Patch1:    	bugfix-add-SO_BINDTODEVICE.patch
 Patch2:    	backport-rdnssd-remove-unused-parameter.patch
 Patch3:         0001-Update-AUTHORS.patch
 Patch4:         0001-Update-NEWS.patch
+Patch6000:      0001-rdnss-fix-signedness-warning.patch
 
 BuildRequires:	gcc perl-generators
 
@@ -50,6 +51,12 @@ It includes the follwing programs :
 %{_mandir}/man*
 
 %changelog
+* Tue Jul 18 2023 caofei <caofei@xfusion.com> -  1.0.4-8
+- Type:bugfix
+- CVE:NA
+- SUG:restart
+- DESC: rdnss fix signedness warning
+
 * Mon Jan 9 2023 caofei <caofei@xfusion.com> - 1.0.4-7
 - Type:bugfix
 - CVE:NA