diff --git a/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp/0001-l2tp_rpc_server.c-Add-missing-prototype-for-l2tp_api.patch b/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp/0001-l2tp_rpc_server.c-Add-missing-prototype-for-l2tp_api.patch
new file mode 100644
index 0000000..d9aed88
--- /dev/null
+++ b/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp/0001-l2tp_rpc_server.c-Add-missing-prototype-for-l2tp_api.patch
@@ -0,0 +1,28 @@
+From ded84ed583e9b0617bc35ab1798032d18b873144 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Mon, 29 Aug 2022 23:30:02 -0700
+Subject: [PATCH] l2tp_rpc_server.c: Add missing prototype for
+ l2tp_api_rpc_check_request
+
+Upstream-Status: Inappropriate [no upstream]
+
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ Makefile | 1 +
+ 1 file changed, 1 insertion(+)
+
+diff --git a/Makefile b/Makefile
+index 0815b31..2fa5b2f 100644
+--- a/Makefile
++++ b/Makefile
+@@ -236,6 +236,7 @@ endif
+ 			-$(RM) $@ $@.tmp
+ 			$(RPCGEN) $(RPCGENFLAGS) -m -o $@.tmp $<
+ 			cat $@.tmp | sed -e 's/switch (rqstp->rq_proc) {/if (l2tp_api_rpc_check_request(transp) < 0) return; switch (rqstp->rq_proc) {/' > $@
++			sed -i '21i int l2tp_api_rpc_check_request(SVCXPRT *xprt);' $@
+ 
+ %_client.c:		%.x
+ 			-$(RM) $@
+-- 
+2.37.2
+
diff --git a/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp/0001-lex-yacc-Add-missing-function-prototypes.patch b/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp/0001-lex-yacc-Add-missing-function-prototypes.patch
new file mode 100644
index 0000000..8c21a74
--- /dev/null
+++ b/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp/0001-lex-yacc-Add-missing-function-prototypes.patch
@@ -0,0 +1,45 @@
+From 2bfdd02d288de92ff118bf41b54c135a6a318c19 Mon Sep 17 00:00:00 2001
+From: Khem Raj <raj.khem@gmail.com>
+Date: Mon, 29 Aug 2022 23:42:11 -0700
+Subject: [PATCH] lex/yacc: Add missing function prototypes
+
+Fixes build with clang15
+
+Upstream-Status: Pending
+Signed-off-by: Khem Raj <raj.khem@gmail.com>
+---
+ l2tp_config_parse.y | 3 +++
+ l2tp_config_token.l | 3 +++
+ 2 files changed, 6 insertions(+)
+
+diff --git a/l2tp_config_parse.y b/l2tp_config_parse.y
+index 4baf1e0..15392d0 100644
+--- a/l2tp_config_parse.y
++++ b/l2tp_config_parse.y
+@@ -29,6 +29,9 @@ static struct l2tp_api_session_msg_data session;
+ 
+ extern void l2tp_log(int level, char *fmt, ...);
+ extern void yyfatal(const char *s);
++extern const char *l2tp_strerror(int error);
++extern int yylex (void);
++extern void yyerror(const char *s);
+ 
+ %}
+ 
+diff --git a/l2tp_config_token.l b/l2tp_config_token.l
+index 9016af6..43b8f0a 100644
+--- a/l2tp_config_token.l
++++ b/l2tp_config_token.l
+@@ -15,6 +15,9 @@
+ #include "l2tp_config_types.h"
+ #include "l2tp_config_parse.h"
+ 
++extern void l2tp_log(int level, char *fmt, ...);
++extern const char *l2tp_strerror(int error);
++
+ void yyfatal(const char *s);
+ void yyerror(const char *s);
+ 
+-- 
+2.37.2
+
diff --git a/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp_1.8.bb b/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp_1.8.bb
index 15cebf4..183c006 100644
--- a/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp_1.8.bb
+++ b/meta-openembedded/meta-networking/recipes-protocols/openl2tp/openl2tp_1.8.bb
@@ -35,6 +35,8 @@
            file://run-ptest \
            file://fix_linux_4.15_compile.patch \
            file://0002-user-ipv6-structures.patch \
+           file://0001-l2tp_rpc_server.c-Add-missing-prototype-for-l2tp_api.patch \
+           file://0001-lex-yacc-Add-missing-function-prototypes.patch \
            "
 SRC_URI[md5sum] = "e3d08dedfb9e6a9a1e24f6766f6dadd0"
 SRC_URI[sha256sum] = "1c97704d4b963a87fbc0e741668d4530933991515ae9ab0dffd11b5444f4860f"